Home / 207,921.70-311,882.55-113,443.30

Finding the Fourth Proportional to 207,921.70, 311,882.55 and 113,443.30

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Solution

The fourth proportional to 207,921.70, 311,882.55 and 113,443.30 is: 170,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,921.70 : 311,882.55 = 113,443.30 : x
  2. Step 2: Convert to fraction form
    207,921.70/311,882.55 = 113,443.30/x
  3. Step 3: Cross multiply
    207,921.70x = 311,882.55 × 113,443.30
  4. Step 4: Simplify right side
    207,921.70x = 35,380,985,684.42
  5. Step 5: Solve for x
    x = 35,380,985,684.42/207,921.70
  6. Step 6: Final answer
    x = 170,164.95

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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.