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Finding the Fourth Proportional to 158,177.86, 218,285.44 and 86,557.89

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Solution

The fourth proportional to 158,177.86, 218,285.44 and 86,557.89 is: 119,449.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,177.86 : 218,285.44 = 86,557.89 : x
  2. Step 2: Convert to fraction form
    158,177.86/218,285.44 = 86,557.89/x
  3. Step 3: Cross multiply
    158,177.86x = 218,285.44 × 86,557.89
  4. Step 4: Simplify right side
    158,177.86x = 18,894,325,579.91
  5. Step 5: Solve for x
    x = 18,894,325,579.91/158,177.86
  6. Step 6: Final answer
    x = 119,449.88

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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.