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Finding the Fourth Proportional to 158,463.52, 218,679.68 and 86,842.88

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Solution

The fourth proportional to 158,463.52, 218,679.68 and 86,842.88 is: 119,843.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,463.52 : 218,679.68 = 86,842.88 : x
  2. Step 2: Convert to fraction form
    158,463.52/218,679.68 = 86,842.88/x
  3. Step 3: Cross multiply
    158,463.52x = 218,679.68 × 86,842.88
  4. Step 4: Simplify right side
    158,463.52x = 18,990,773,208.68
  5. Step 5: Solve for x
    x = 18,990,773,208.68/158,463.52
  6. Step 6: Final answer
    x = 119,843.19

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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.