Home / 159,721.20-239,581.80-131,727.60

Finding the Fourth Proportional to 159,721.20, 239,581.80 and 131,727.60

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Solution

The fourth proportional to 159,721.20, 239,581.80 and 131,727.60 is: 197,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,721.20 : 239,581.80 = 131,727.60 : x
  2. Step 2: Convert to fraction form
    159,721.20/239,581.80 = 131,727.60/x
  3. Step 3: Cross multiply
    159,721.20x = 239,581.80 × 131,727.60
  4. Step 4: Simplify right side
    159,721.20x = 31,559,535,517.68
  5. Step 5: Solve for x
    x = 31,559,535,517.68/159,721.20
  6. Step 6: Final answer
    x = 197,591.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.