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Finding the Fourth Proportional to 172,993.80, 259,490.70 and 73,226.10

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Solution

The fourth proportional to 172,993.80, 259,490.70 and 73,226.10 is: 109,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,993.80 : 259,490.70 = 73,226.10 : x
  2. Step 2: Convert to fraction form
    172,993.80/259,490.70 = 73,226.10/x
  3. Step 3: Cross multiply
    172,993.80x = 259,490.70 × 73,226.10
  4. Step 4: Simplify right side
    172,993.80x = 19,001,491,947.27
  5. Step 5: Solve for x
    x = 19,001,491,947.27/172,993.80
  6. Step 6: Final answer
    x = 109,839.15

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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.