Home / 83,930.28-126,354.87-76,581.96

Finding the Fourth Proportional to 83,930.28, 126,354.87 and 76,581.96

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Solution

The fourth proportional to 83,930.28, 126,354.87 and 76,581.96 is: 115,292.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,930.28 : 126,354.87 = 76,581.96 : x
  2. Step 2: Convert to fraction form
    83,930.28/126,354.87 = 76,581.96/x
  3. Step 3: Cross multiply
    83,930.28x = 126,354.87 × 76,581.96
  4. Step 4: Simplify right side
    83,930.28x = 9,676,503,600.15
  5. Step 5: Solve for x
    x = 9,676,503,600.15/83,930.28
  6. Step 6: Final answer
    x = 115,292.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.