Finding the Fourth Proportional to 108.85, 162.48 and 100.82

Step by Step Solution

1. Step 1: Write the proportion equation
   108.85 : 162.48 = 100.82 : x
2. Step 2: Convert to fraction form
   108.85/162.48 = 100.82/x
3. Step 3: Cross multiply
   108.85x = 162.48 × 100.82
4. Step 4: Simplify right side
   108.85x = 16,381.23
5. Step 5: Solve for x
   x = 16,381.23/108.85
6. Step 6: Final answer
   x = 150.49