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Finding the Fourth Proportional to 161,286.72, 222,565.29 and 89,664.90

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Solution

The fourth proportional to 161,286.72, 222,565.29 and 89,664.90 is: 123,731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,286.72 : 222,565.29 = 89,664.90 : x
  2. Step 2: Convert to fraction form
    161,286.72/222,565.29 = 89,664.90/x
  3. Step 3: Cross multiply
    161,286.72x = 222,565.29 × 89,664.90
  4. Step 4: Simplify right side
    161,286.72x = 19,956,294,471.32
  5. Step 5: Solve for x
    x = 19,956,294,471.32/161,286.72
  6. Step 6: Final answer
    x = 123,731.79

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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.