diff --git a/core/src/main/java/com/bloxbean/cardano/yaci/core/util/CborSerializationUtil.java b/core/src/main/java/com/bloxbean/cardano/yaci/core/util/CborSerializationUtil.java
index 420b41f..d50e6a1 100644
--- a/core/src/main/java/com/bloxbean/cardano/yaci/core/util/CborSerializationUtil.java
+++ b/core/src/main/java/com/bloxbean/cardano/yaci/core/util/CborSerializationUtil.java
@@ -12,6 +12,7 @@
 import java.io.ByteArrayOutputStream;
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.math.RoundingMode;
 
 public class CborSerializationUtil {
 
@@ -87,7 +88,11 @@ public static BigDecimal toRationalNumber(DataItem di) {
         Number numerator = rdi.getNumerator();
         Number denominator = rdi.getDenominator();
 
-        return new BigDecimal(numerator.getValue()).divide(new BigDecimal(denominator.getValue()));
+        try {
+            return new BigDecimal(numerator.getValue()).divide(new BigDecimal(denominator.getValue()));
+        } catch (ArithmeticException e) { //set scale and try again
+            return new BigDecimal(numerator.getValue()).divide(new BigDecimal(denominator.getValue()), 10, RoundingMode.HALF_UP);
+        }
     }
 
     /**