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Finding the Fourth Proportional to 83,732.40, 125,598.60 and 83,149.20

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Solution

The fourth proportional to 83,732.40, 125,598.60 and 83,149.20 is: 124,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,732.40 : 125,598.60 = 83,149.20 : x
  2. Step 2: Convert to fraction form
    83,732.40/125,598.60 = 83,149.20/x
  3. Step 3: Cross multiply
    83,732.40x = 125,598.60 × 83,149.20
  4. Step 4: Simplify right side
    83,732.40x = 10,443,423,111.12
  5. Step 5: Solve for x
    x = 10,443,423,111.12/83,732.40
  6. Step 6: Final answer
    x = 124,723.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.