Home / 159,720.20-239,580.30-131,726.60

Finding the Fourth Proportional to 159,720.20, 239,580.30 and 131,726.60

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Solution

The fourth proportional to 159,720.20, 239,580.30 and 131,726.60 is: 197,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,720.20 : 239,580.30 = 131,726.60 : x
  2. Step 2: Convert to fraction form
    159,720.20/239,580.30 = 131,726.60/x
  3. Step 3: Cross multiply
    159,720.20x = 239,580.30 × 131,726.60
  4. Step 4: Simplify right side
    159,720.20x = 31,559,098,345.98
  5. Step 5: Solve for x
    x = 31,559,098,345.98/159,720.20
  6. Step 6: Final answer
    x = 197,589.90

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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.