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Finding the Fourth Proportional to 80,517.92, 120,234.67 and 65,756.12

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Solution

The fourth proportional to 80,517.92, 120,234.67 and 65,756.12 is: 98,191.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,517.92 : 120,234.67 = 65,756.12 : x
  2. Step 2: Convert to fraction form
    80,517.92/120,234.67 = 65,756.12/x
  3. Step 3: Cross multiply
    80,517.92x = 120,234.67 × 65,756.12
  4. Step 4: Simplify right side
    80,517.92x = 7,906,165,388.68
  5. Step 5: Solve for x
    x = 7,906,165,388.68/80,517.92
  6. Step 6: Final answer
    x = 98,191.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.