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Finding the Fourth Proportional to 125,294.56, 172,906.32 and 68,705.92

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Solution

The fourth proportional to 125,294.56, 172,906.32 and 68,705.92 is: 94,814.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,294.56 : 172,906.32 = 68,705.92 : x
  2. Step 2: Convert to fraction form
    125,294.56/172,906.32 = 68,705.92/x
  3. Step 3: Cross multiply
    125,294.56x = 172,906.32 × 68,705.92
  4. Step 4: Simplify right side
    125,294.56x = 11,879,687,789.41
  5. Step 5: Solve for x
    x = 11,879,687,789.41/125,294.56
  6. Step 6: Final answer
    x = 94,814.07

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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.