Home / 159,565.78-220,139.05-91,558.18

Finding the Fourth Proportional to 159,565.78, 220,139.05 and 91,558.18

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Solution

The fourth proportional to 159,565.78, 220,139.05 and 91,558.18 is: 126,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,565.78 : 220,139.05 = 91,558.18 : x
  2. Step 2: Convert to fraction form
    159,565.78/220,139.05 = 91,558.18/x
  3. Step 3: Cross multiply
    159,565.78x = 220,139.05 × 91,558.18
  4. Step 4: Simplify right side
    159,565.78x = 20,155,529,206.44
  5. Step 5: Solve for x
    x = 20,155,529,206.44/159,565.78
  6. Step 6: Final answer
    x = 126,314.86

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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.