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Finding the Fourth Proportional to 181,335.20, 272,002.80 and 131,568.80

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Solution

The fourth proportional to 181,335.20, 272,002.80 and 131,568.80 is: 197,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,335.20 : 272,002.80 = 131,568.80 : x
  2. Step 2: Convert to fraction form
    181,335.20/272,002.80 = 131,568.80/x
  3. Step 3: Cross multiply
    181,335.20x = 272,002.80 × 131,568.80
  4. Step 4: Simplify right side
    181,335.20x = 35,787,081,992.64
  5. Step 5: Solve for x
    x = 35,787,081,992.64/181,335.20
  6. Step 6: Final answer
    x = 197,353.20

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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.