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Finding the Fourth Proportional to 158,179.89, 218,288.27 and 86,559.92

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Solution

The fourth proportional to 158,179.89, 218,288.27 and 86,559.92 is: 119,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,179.89 : 218,288.27 = 86,559.92 : x
  2. Step 2: Convert to fraction form
    158,179.89/218,288.27 = 86,559.92/x
  3. Step 3: Cross multiply
    158,179.89x = 218,288.27 × 86,559.92
  4. Step 4: Simplify right side
    158,179.89x = 18,895,015,301.06
  5. Step 5: Solve for x
    x = 18,895,015,301.06/158,179.89
  6. Step 6: Final answer
    x = 119,452.70

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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.