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Finding the Fourth Proportional to 159,758.72, 220,467.77 and 88,138.71

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Solution

The fourth proportional to 159,758.72, 220,467.77 and 88,138.71 is: 121,631.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,758.72 : 220,467.77 = 88,138.71 : x
  2. Step 2: Convert to fraction form
    159,758.72/220,467.77 = 88,138.71/x
  3. Step 3: Cross multiply
    159,758.72x = 220,467.77 × 88,138.71
  4. Step 4: Simplify right side
    159,758.72x = 19,431,744,403.68
  5. Step 5: Solve for x
    x = 19,431,744,403.68/159,758.72
  6. Step 6: Final answer
    x = 121,631.83

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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.