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Finding the Fourth Proportional to 125,714.76, 187,387.87 and 115,625.69

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Solution

The fourth proportional to 125,714.76, 187,387.87 and 115,625.69 is: 172,349.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,714.76 : 187,387.87 = 115,625.69 : x
  2. Step 2: Convert to fraction form
    125,714.76/187,387.87 = 115,625.69/x
  3. Step 3: Cross multiply
    125,714.76x = 187,387.87 × 115,625.69
  4. Step 4: Simplify right side
    125,714.76x = 21,666,850,540.38
  5. Step 5: Solve for x
    x = 21,666,850,540.38/125,714.76
  6. Step 6: Final answer
    x = 172,349.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.