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Finding the Fourth Proportional to 125,181, 172,764.24 and 71,473.68

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Solution

The fourth proportional to 125,181, 172,764.24 and 71,473.68 is: 98,641.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,181 : 172,764.24 = 71,473.68 : x
  2. Step 2: Convert to fraction form
    125,181/172,764.24 = 71,473.68/x
  3. Step 3: Cross multiply
    125,181x = 172,764.24 × 71,473.68
  4. Step 4: Simplify right side
    125,181x = 12,348,096,005.20
  5. Step 5: Solve for x
    x = 12,348,096,005.20/125,181
  6. Step 6: Final answer
    x = 98,641.93

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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.