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Finding the Fourth Proportional to 168,248.72, 252,485.31 and 87,270.38

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Solution

The fourth proportional to 168,248.72, 252,485.31 and 87,270.38 is: 130,963.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,248.72 : 252,485.31 = 87,270.38 : x
  2. Step 2: Convert to fraction form
    168,248.72/252,485.31 = 87,270.38/x
  3. Step 3: Cross multiply
    168,248.72x = 252,485.31 × 87,270.38
  4. Step 4: Simplify right side
    168,248.72x = 22,034,488,004.21
  5. Step 5: Solve for x
    x = 22,034,488,004.21/168,248.72
  6. Step 6: Final answer
    x = 130,963.78

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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.