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Finding the Fourth Proportional to 159,867.72, 220,617.50 and 88,247.79

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Solution

The fourth proportional to 159,867.72, 220,617.50 and 88,247.79 is: 121,781.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,867.72 : 220,617.50 = 88,247.79 : x
  2. Step 2: Convert to fraction form
    159,867.72/220,617.50 = 88,247.79/x
  3. Step 3: Cross multiply
    159,867.72x = 220,617.50 × 88,247.79
  4. Step 4: Simplify right side
    159,867.72x = 19,469,006,369.09
  5. Step 5: Solve for x
    x = 19,469,006,369.09/159,867.72
  6. Step 6: Final answer
    x = 121,781.97

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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.