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Finding the Fourth Proportional to 125,273.61, 172,645.78 and 88,976.70

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Solution

The fourth proportional to 125,273.61, 172,645.78 and 88,976.70 is: 122,623.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,273.61 : 172,645.78 = 88,976.70 : x
  2. Step 2: Convert to fraction form
    125,273.61/172,645.78 = 88,976.70/x
  3. Step 3: Cross multiply
    125,273.61x = 172,645.78 × 88,976.70
  4. Step 4: Simplify right side
    125,273.61x = 15,361,451,773.33
  5. Step 5: Solve for x
    x = 15,361,451,773.33/125,273.61
  6. Step 6: Final answer
    x = 122,623.21

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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.