Home / 159,538.38-220,164.42-87,920.96

Finding the Fourth Proportional to 159,538.38, 220,164.42 and 87,920.96

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Solution

The fourth proportional to 159,538.38, 220,164.42 and 87,920.96 is: 121,331.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,538.38 : 220,164.42 = 87,920.96 : x
  2. Step 2: Convert to fraction form
    159,538.38/220,164.42 = 87,920.96/x
  3. Step 3: Cross multiply
    159,538.38x = 220,164.42 × 87,920.96
  4. Step 4: Simplify right side
    159,538.38x = 19,357,067,164.24
  5. Step 5: Solve for x
    x = 19,357,067,164.24/159,538.38
  6. Step 6: Final answer
    x = 121,331.73

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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.