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Finding the Fourth Proportional to 172,693.52, 258,886.60 and 67,488.56

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Solution

The fourth proportional to 172,693.52, 258,886.60 and 67,488.56 is: 101,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,693.52 : 258,886.60 = 67,488.56 : x
  2. Step 2: Convert to fraction form
    172,693.52/258,886.60 = 67,488.56/x
  3. Step 3: Cross multiply
    172,693.52x = 258,886.60 × 67,488.56
  4. Step 4: Simplify right side
    172,693.52x = 17,471,883,837.30
  5. Step 5: Solve for x
    x = 17,471,883,837.30/172,693.52
  6. Step 6: Final answer
    x = 101,172.78

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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.