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Finding the Fourth Proportional to 172,365.80, 258,442.78 and 67,062.12

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Solution

The fourth proportional to 172,365.80, 258,442.78 and 67,062.12 is: 100,551.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,365.80 : 258,442.78 = 67,062.12 : x
  2. Step 2: Convert to fraction form
    172,365.80/258,442.78 = 67,062.12/x
  3. Step 3: Cross multiply
    172,365.80x = 258,442.78 × 67,062.12
  4. Step 4: Simplify right side
    172,365.80x = 17,331,720,725.49
  5. Step 5: Solve for x
    x = 17,331,720,725.49/172,365.80
  6. Step 6: Final answer
    x = 100,551.97

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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.