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Finding the Fourth Proportional to 161,407.32, 222,753.12 and 89,793.96

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Solution

The fourth proportional to 161,407.32, 222,753.12 and 89,793.96 is: 123,921.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,407.32 : 222,753.12 = 89,793.96 : x
  2. Step 2: Convert to fraction form
    161,407.32/222,753.12 = 89,793.96/x
  3. Step 3: Cross multiply
    161,407.32x = 222,753.12 × 89,793.96
  4. Step 4: Simplify right side
    161,407.32x = 20,001,884,747.16
  5. Step 5: Solve for x
    x = 20,001,884,747.16/161,407.32
  6. Step 6: Final answer
    x = 123,921.79

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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.