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Finding the Fourth Proportional to 125,407.86, 173,062.80 and 71,694.02

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Solution

The fourth proportional to 125,407.86, 173,062.80 and 71,694.02 is: 98,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,407.86 : 173,062.80 = 71,694.02 : x
  2. Step 2: Convert to fraction form
    125,407.86/173,062.80 = 71,694.02/x
  3. Step 3: Cross multiply
    125,407.86x = 173,062.80 × 71,694.02
  4. Step 4: Simplify right side
    125,407.86x = 12,407,566,979.14
  5. Step 5: Solve for x
    x = 12,407,566,979.14/125,407.86
  6. Step 6: Final answer
    x = 98,937.71

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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.