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Finding the Fourth Proportional to 158,146.68, 218,248.92 and 86,532.96

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Solution

The fourth proportional to 158,146.68, 218,248.92 and 86,532.96 is: 119,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,146.68 : 218,248.92 = 86,532.96 : x
  2. Step 2: Convert to fraction form
    158,146.68/218,248.92 = 86,532.96/x
  3. Step 3: Cross multiply
    158,146.68x = 218,248.92 × 86,532.96
  4. Step 4: Simplify right side
    158,146.68x = 18,885,725,064.40
  5. Step 5: Solve for x
    x = 18,885,725,064.40/158,146.68
  6. Step 6: Final answer
    x = 119,419.04

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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.