Home / 129,241-193,721.82-54,343.72

Finding the Fourth Proportional to 129,241, 193,721.82 and 54,343.72

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Solution

The fourth proportional to 129,241, 193,721.82 and 54,343.72 is: 81,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,241 : 193,721.82 = 54,343.72 : x
  2. Step 2: Convert to fraction form
    129,241/193,721.82 = 54,343.72/x
  3. Step 3: Cross multiply
    129,241x = 193,721.82 × 54,343.72
  4. Step 4: Simplify right side
    129,241x = 10,527,564,343.97
  5. Step 5: Solve for x
    x = 10,527,564,343.97/129,241
  6. Step 6: Final answer
    x = 81,456.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.