Home / 83,929.28-126,353.36-76,580.96

Finding the Fourth Proportional to 83,929.28, 126,353.36 and 76,580.96

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Solution

The fourth proportional to 83,929.28, 126,353.36 and 76,580.96 is: 115,290.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,929.28 : 126,353.36 = 76,580.96 : x
  2. Step 2: Convert to fraction form
    83,929.28/126,353.36 = 76,580.96/x
  3. Step 3: Cross multiply
    83,929.28x = 126,353.36 × 76,580.96
  4. Step 4: Simplify right side
    83,929.28x = 9,676,261,167.71
  5. Step 5: Solve for x
    x = 9,676,261,167.71/83,929.28
  6. Step 6: Final answer
    x = 115,290.66

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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.