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Finding the Fourth Proportional to 172,326.75, 258,508.67 and 72,497.10

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Solution

The fourth proportional to 172,326.75, 258,508.67 and 72,497.10 is: 108,753.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,326.75 : 258,508.67 = 72,497.10 : x
  2. Step 2: Convert to fraction form
    172,326.75/258,508.67 = 72,497.10/x
  3. Step 3: Cross multiply
    172,326.75x = 258,508.67 × 72,497.10
  4. Step 4: Simplify right side
    172,326.75x = 18,741,128,899.86
  5. Step 5: Solve for x
    x = 18,741,128,899.86/172,326.75
  6. Step 6: Final answer
    x = 108,753.45

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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.