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Finding the Fourth Proportional to 159,479.38, 220,091.48 and 87,859.38

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Solution

The fourth proportional to 159,479.38, 220,091.48 and 87,859.38 is: 121,251.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,479.38 : 220,091.48 = 87,859.38 : x
  2. Step 2: Convert to fraction form
    159,479.38/220,091.48 = 87,859.38/x
  3. Step 3: Cross multiply
    159,479.38x = 220,091.48 × 87,859.38
  4. Step 4: Simplify right side
    159,479.38x = 19,337,101,691.60
  5. Step 5: Solve for x
    x = 19,337,101,691.60/159,479.38
  6. Step 6: Final answer
    x = 121,251.42

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1.5x scale

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.