Home / 207,921.70-311,882.55-123,722.20

Finding the Fourth Proportional to 207,921.70, 311,882.55 and 123,722.20

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Solution

The fourth proportional to 207,921.70, 311,882.55 and 123,722.20 is: 185,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,921.70 : 311,882.55 = 123,722.20 : x
  2. Step 2: Convert to fraction form
    207,921.70/311,882.55 = 123,722.20/x
  3. Step 3: Cross multiply
    207,921.70x = 311,882.55 × 123,722.20
  4. Step 4: Simplify right side
    207,921.70x = 38,586,795,227.61
  5. Step 5: Solve for x
    x = 38,586,795,227.61/207,921.70
  6. Step 6: Final answer
    x = 185,583.30

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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.