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Finding the Fourth Proportional to 121,549.52, 167,738.10 and 71,248.52

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Solution

The fourth proportional to 121,549.52, 167,738.10 and 71,248.52 is: 98,322.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,549.52 : 167,738.10 = 71,248.52 : x
  2. Step 2: Convert to fraction form
    121,549.52/167,738.10 = 71,248.52/x
  3. Step 3: Cross multiply
    121,549.52x = 167,738.10 × 71,248.52
  4. Step 4: Simplify right side
    121,549.52x = 11,951,091,372.61
  5. Step 5: Solve for x
    x = 11,951,091,372.61/121,549.52
  6. Step 6: Final answer
    x = 98,322.82

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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.