Home / 146.50-202.17-81

Finding the Fourth Proportional to 146.50, 202.17 and 81

Calculator

Solution

The fourth proportional to 146.50, 202.17 and 81 is: 111.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.50 : 202.17 = 81 : x
  2. Step 2: Convert to fraction form
    146.50/202.17 = 81/x
  3. Step 3: Cross multiply
    146.50x = 202.17 × 81
  4. Step 4: Simplify right side
    146.50x = 16,375.85
  5. Step 5: Solve for x
    x = 16,375.85/146.50
  6. Step 6: Final answer
    x = 111.78

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.