Home / 159,565.28-220,138.36-91,557.68

Finding the Fourth Proportional to 159,565.28, 220,138.36 and 91,557.68

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Solution

The fourth proportional to 159,565.28, 220,138.36 and 91,557.68 is: 126,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,565.28 : 220,138.36 = 91,557.68 : x
  2. Step 2: Convert to fraction form
    159,565.28/220,138.36 = 91,557.68/x
  3. Step 3: Cross multiply
    159,565.28x = 220,138.36 × 91,557.68
  4. Step 4: Simplify right side
    159,565.28x = 20,155,356,191.02
  5. Step 5: Solve for x
    x = 20,155,356,191.02/159,565.28
  6. Step 6: Final answer
    x = 126,314.18

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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.