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Finding the Fourth Proportional to 172,728.60, 259,092.90 and 67,473.75

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Solution

The fourth proportional to 172,728.60, 259,092.90 and 67,473.75 is: 101,210.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,728.60 : 259,092.90 = 67,473.75 : x
  2. Step 2: Convert to fraction form
    172,728.60/259,092.90 = 67,473.75/x
  3. Step 3: Cross multiply
    172,728.60x = 259,092.90 × 67,473.75
  4. Step 4: Simplify right side
    172,728.60x = 17,481,969,561.38
  5. Step 5: Solve for x
    x = 17,481,969,561.38/172,728.60
  6. Step 6: Final answer
    x = 101,210.63

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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.