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Finding the Fourth Proportional to 119,867.61, 165,479.49 and 87,565.97

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Solution

The fourth proportional to 119,867.61, 165,479.49 and 87,565.97 is: 120,886.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,867.61 : 165,479.49 = 87,565.97 : x
  2. Step 2: Convert to fraction form
    119,867.61/165,479.49 = 87,565.97/x
  3. Step 3: Cross multiply
    119,867.61x = 165,479.49 × 87,565.97
  4. Step 4: Simplify right side
    119,867.61x = 14,490,371,229.56
  5. Step 5: Solve for x
    x = 14,490,371,229.56/119,867.61
  6. Step 6: Final answer
    x = 120,886.46

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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.