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Finding the Fourth Proportional to 159,789.32, 220,501.87 and 91,758.44

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Solution

The fourth proportional to 159,789.32, 220,501.87 and 91,758.44 is: 126,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,789.32 : 220,501.87 = 91,758.44 : x
  2. Step 2: Convert to fraction form
    159,789.32/220,501.87 = 91,758.44/x
  3. Step 3: Cross multiply
    159,789.32x = 220,501.87 × 91,758.44
  4. Step 4: Simplify right side
    159,789.32x = 20,232,906,276.38
  5. Step 5: Solve for x
    x = 20,232,906,276.38/159,789.32
  6. Step 6: Final answer
    x = 126,622.40

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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.