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Finding the Fourth Proportional to 172,843.62, 259,087.37 and 66,198.48

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Solution

The fourth proportional to 172,843.62, 259,087.37 and 66,198.48 is: 99,229.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,843.62 : 259,087.37 = 66,198.48 : x
  2. Step 2: Convert to fraction form
    172,843.62/259,087.37 = 66,198.48/x
  3. Step 3: Cross multiply
    172,843.62x = 259,087.37 × 66,198.48
  4. Step 4: Simplify right side
    172,843.62x = 17,151,189,750.21
  5. Step 5: Solve for x
    x = 17,151,189,750.21/172,843.62
  6. Step 6: Final answer
    x = 99,229.52

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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.