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Finding the Fourth Proportional to 158,098.43, 218,169.35 and 86,481.47

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Solution

The fourth proportional to 158,098.43, 218,169.35 and 86,481.47 is: 119,340.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,098.43 : 218,169.35 = 86,481.47 : x
  2. Step 2: Convert to fraction form
    158,098.43/218,169.35 = 86,481.47/x
  3. Step 3: Cross multiply
    158,098.43x = 218,169.35 × 86,481.47
  4. Step 4: Simplify right side
    158,098.43x = 18,867,606,534.27
  5. Step 5: Solve for x
    x = 18,867,606,534.27/158,098.43
  6. Step 6: Final answer
    x = 119,340.88

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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.