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Finding the Fourth Proportional to 168,602.88, 252,686.30 and 126,149.88

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Solution

The fourth proportional to 168,602.88, 252,686.30 and 126,149.88 is: 189,061.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,602.88 : 252,686.30 = 126,149.88 : x
  2. Step 2: Convert to fraction form
    168,602.88/252,686.30 = 126,149.88/x
  3. Step 3: Cross multiply
    168,602.88x = 252,686.30 × 126,149.88
  4. Step 4: Simplify right side
    168,602.88x = 31,876,345,791.89
  5. Step 5: Solve for x
    x = 31,876,345,791.89/168,602.88
  6. Step 6: Final answer
    x = 189,061.69

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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.