Home / 231,068.40-318,862.98-129,073.62

Finding the Fourth Proportional to 231,068.40, 318,862.98 and 129,073.62

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Solution

The fourth proportional to 231,068.40, 318,862.98 and 129,073.62 is: 178,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,068.40 : 318,862.98 = 129,073.62 : x
  2. Step 2: Convert to fraction form
    231,068.40/318,862.98 = 129,073.62/x
  3. Step 3: Cross multiply
    231,068.40x = 318,862.98 × 129,073.62
  4. Step 4: Simplify right side
    231,068.40x = 41,156,799,112.59
  5. Step 5: Solve for x
    x = 41,156,799,112.59/231,068.40
  6. Step 6: Final answer
    x = 178,115.22

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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.