Finding the Fourth Proportional to 131.34, 181.25 and 106.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131.34 : 181.25 = 106.50 : x
2. Step 2: Convert to fraction form
   131.34/181.25 = 106.50/x
3. Step 3: Cross multiply
   131.34x = 181.25 × 106.50
4. Step 4: Simplify right side
   131.34x = 19,302.59
5. Step 5: Solve for x
   x = 19,302.59/131.34
6. Step 6: Final answer
   x = 146.97