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Finding the Fourth Proportional to 159,104.97, 219,565.67 and 87,489.63

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Solution

The fourth proportional to 159,104.97, 219,565.67 and 87,489.63 is: 120,736.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,104.97 : 219,565.67 = 87,489.63 : x
  2. Step 2: Convert to fraction form
    159,104.97/219,565.67 = 87,489.63/x
  3. Step 3: Cross multiply
    159,104.97x = 219,565.67 × 87,489.63
  4. Step 4: Simplify right side
    159,104.97x = 19,209,719,229.00
  5. Step 5: Solve for x
    x = 19,209,719,229.00/159,104.97
  6. Step 6: Final answer
    x = 120,736.14

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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.