Finding the Fourth Proportional to 101.83, 152.50 and 100.15

Step by Step Solution

1. Step 1: Write the proportion equation
   101.83 : 152.50 = 100.15 : x
2. Step 2: Convert to fraction form
   101.83/152.50 = 100.15/x
3. Step 3: Cross multiply
   101.83x = 152.50 × 100.15
4. Step 4: Simplify right side
   101.83x = 15,272.88
5. Step 5: Solve for x
   x = 15,272.88/101.83
6. Step 6: Final answer
   x = 149.98