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Finding the Fourth Proportional to 181,987.10, 272,980.65 and 156,617.90

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Solution

The fourth proportional to 181,987.10, 272,980.65 and 156,617.90 is: 234,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,987.10 : 272,980.65 = 156,617.90 : x
  2. Step 2: Convert to fraction form
    181,987.10/272,980.65 = 156,617.90/x
  3. Step 3: Cross multiply
    181,987.10x = 272,980.65 × 156,617.90
  4. Step 4: Simplify right side
    181,987.10x = 42,753,656,143.64
  5. Step 5: Solve for x
    x = 42,753,656,143.64/181,987.10
  6. Step 6: Final answer
    x = 234,926.85

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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.