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Finding the Fourth Proportional to 199,882.80, 299,939.40 and 75,313.20

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Solution

The fourth proportional to 199,882.80, 299,939.40 and 75,313.20 is: 113,013.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,882.80 : 299,939.40 = 75,313.20 : x
  2. Step 2: Convert to fraction form
    199,882.80/299,939.40 = 75,313.20/x
  3. Step 3: Cross multiply
    199,882.80x = 299,939.40 × 75,313.20
  4. Step 4: Simplify right side
    199,882.80x = 22,589,396,020.08
  5. Step 5: Solve for x
    x = 22,589,396,020.08/199,882.80
  6. Step 6: Final answer
    x = 113,013.21

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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.