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Finding the Fourth Proportional to 125,165.91, 172,729.34 and 67,805.82

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Solution

The fourth proportional to 125,165.91, 172,729.34 and 67,805.82 is: 93,572.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,165.91 : 172,729.34 = 67,805.82 : x
  2. Step 2: Convert to fraction form
    125,165.91/172,729.34 = 67,805.82/x
  3. Step 3: Cross multiply
    125,165.91x = 172,729.34 × 67,805.82
  4. Step 4: Simplify right side
    125,165.91x = 11,712,054,197.73
  5. Step 5: Solve for x
    x = 11,712,054,197.73/125,165.91
  6. Step 6: Final answer
    x = 93,572.24

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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.