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Finding the Fourth Proportional to 168,489.61, 252,729.55 and 68,625.11

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Solution

The fourth proportional to 168,489.61, 252,729.55 and 68,625.11 is: 102,935.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,489.61 : 252,729.55 = 68,625.11 : x
  2. Step 2: Convert to fraction form
    168,489.61/252,729.55 = 68,625.11/x
  3. Step 3: Cross multiply
    168,489.61x = 252,729.55 × 68,625.11
  4. Step 4: Simplify right side
    168,489.61x = 17,343,593,169.00
  5. Step 5: Solve for x
    x = 17,343,593,169.00/168,489.61
  6. Step 6: Final answer
    x = 102,935.68

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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.