Home / 181,540.80-272,311.20-131,385.60

Finding the Fourth Proportional to 181,540.80, 272,311.20 and 131,385.60

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Solution

The fourth proportional to 181,540.80, 272,311.20 and 131,385.60 is: 197,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,540.80 : 272,311.20 = 131,385.60 : x
  2. Step 2: Convert to fraction form
    181,540.80/272,311.20 = 131,385.60/x
  3. Step 3: Cross multiply
    181,540.80x = 272,311.20 × 131,385.60
  4. Step 4: Simplify right side
    181,540.80x = 35,777,770,398.72
  5. Step 5: Solve for x
    x = 35,777,770,398.72/181,540.80
  6. Step 6: Final answer
    x = 197,078.40

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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.