Home / 102,781.76-141,862.52-66,909.29

Finding the Fourth Proportional to 102,781.76, 141,862.52 and 66,909.29

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Solution

The fourth proportional to 102,781.76, 141,862.52 and 66,909.29 is: 92,350.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,781.76 : 141,862.52 = 66,909.29 : x
  2. Step 2: Convert to fraction form
    102,781.76/141,862.52 = 66,909.29/x
  3. Step 3: Cross multiply
    102,781.76x = 141,862.52 × 66,909.29
  4. Step 4: Simplify right side
    102,781.76x = 9,491,919,948.77
  5. Step 5: Solve for x
    x = 9,491,919,948.77/102,781.76
  6. Step 6: Final answer
    x = 92,350.24

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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.