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Finding the Fourth Proportional to 125,174.52, 172,747.76 and 71,476.79

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Solution

The fourth proportional to 125,174.52, 172,747.76 and 71,476.79 is: 98,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,174.52 : 172,747.76 = 71,476.79 : x
  2. Step 2: Convert to fraction form
    125,174.52/172,747.76 = 71,476.79/x
  3. Step 3: Cross multiply
    125,174.52x = 172,747.76 × 71,476.79
  4. Step 4: Simplify right side
    125,174.52x = 12,347,454,143.37
  5. Step 5: Solve for x
    x = 12,347,454,143.37/125,174.52
  6. Step 6: Final answer
    x = 98,641.91

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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.