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Finding the Fourth Proportional to 158,179.47, 218,287.68 and 86,559.50

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Solution

The fourth proportional to 158,179.47, 218,287.68 and 86,559.50 is: 119,452.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,179.47 : 218,287.68 = 86,559.50 : x
  2. Step 2: Convert to fraction form
    158,179.47/218,287.68 = 86,559.50/x
  3. Step 3: Cross multiply
    158,179.47x = 218,287.68 × 86,559.50
  4. Step 4: Simplify right side
    158,179.47x = 18,894,871,020.92
  5. Step 5: Solve for x
    x = 18,894,871,020.92/158,179.47
  6. Step 6: Final answer
    x = 119,452.11

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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.