Finding the Fourth Proportional to 100.97, 151.25 and 70.50

Step by Step Solution

1. Step 1: Write the proportion equation
   100.97 : 151.25 = 70.50 : x
2. Step 2: Convert to fraction form
   100.97/151.25 = 70.50/x
3. Step 3: Cross multiply
   100.97x = 151.25 × 70.50
4. Step 4: Simplify right side
   100.97x = 10,662.77
5. Step 5: Solve for x
   x = 10,662.77/100.97
6. Step 6: Final answer
   x = 105.61