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Finding the Fourth Proportional to 141,347.52, 195,060 and 77,691.84

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Solution

The fourth proportional to 141,347.52, 195,060 and 77,691.84 is: 107,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,347.52 : 195,060 = 77,691.84 : x
  2. Step 2: Convert to fraction form
    141,347.52/195,060 = 77,691.84/x
  3. Step 3: Cross multiply
    141,347.52x = 195,060 × 77,691.84
  4. Step 4: Simplify right side
    141,347.52x = 15,154,570,310.40
  5. Step 5: Solve for x
    x = 15,154,570,310.40/141,347.52
  6. Step 6: Final answer
    x = 107,214.97

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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.