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Finding the Fourth Proportional to 168,463.78, 252,996.86 and 161,691.07

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Solution

The fourth proportional to 168,463.78, 252,996.86 and 161,691.07 is: 242,825.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,463.78 : 252,996.86 = 161,691.07 : x
  2. Step 2: Convert to fraction form
    168,463.78/252,996.86 = 161,691.07/x
  3. Step 3: Cross multiply
    168,463.78x = 252,996.86 × 161,691.07
  4. Step 4: Simplify right side
    168,463.78x = 40,907,333,000.04
  5. Step 5: Solve for x
    x = 40,907,333,000.04/168,463.78
  6. Step 6: Final answer
    x = 242,825.69

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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.