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Finding the Fourth Proportional to 125,085.29, 172,617.47 and 67,724.60

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Solution

The fourth proportional to 125,085.29, 172,617.47 and 67,724.60 is: 93,459.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,085.29 : 172,617.47 = 67,724.60 : x
  2. Step 2: Convert to fraction form
    125,085.29/172,617.47 = 67,724.60/x
  3. Step 3: Cross multiply
    125,085.29x = 172,617.47 × 67,724.60
  4. Step 4: Simplify right side
    125,085.29x = 11,690,449,108.76
  5. Step 5: Solve for x
    x = 11,690,449,108.76/125,085.29
  6. Step 6: Final answer
    x = 93,459.82

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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.