Finding the Fourth Proportional to 100.71, 150.48 and 83.48

Step by Step Solution

1. Step 1: Write the proportion equation
   100.71 : 150.48 = 83.48 : x
2. Step 2: Convert to fraction form
   100.71/150.48 = 83.48/x
3. Step 3: Cross multiply
   100.71x = 150.48 × 83.48
4. Step 4: Simplify right side
   100.71x = 12,561.32
5. Step 5: Solve for x
   x = 12,561.32/100.71
6. Step 6: Final answer
   x = 124.73