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Finding the Fourth Proportional to 158,363.73, 218,530.58 and 86,732.19

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Solution

The fourth proportional to 158,363.73, 218,530.58 and 86,732.19 is: 119,684.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,363.73 : 218,530.58 = 86,732.19 : x
  2. Step 2: Convert to fraction form
    158,363.73/218,530.58 = 86,732.19/x
  3. Step 3: Cross multiply
    158,363.73x = 218,530.58 × 86,732.19
  4. Step 4: Simplify right side
    158,363.73x = 18,953,635,351.71
  5. Step 5: Solve for x
    x = 18,953,635,351.71/158,363.73
  6. Step 6: Final answer
    x = 119,684.19

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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.