Home / 207,974.30-311,961.45-83,404.70

Finding the Fourth Proportional to 207,974.30, 311,961.45 and 83,404.70

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Solution

The fourth proportional to 207,974.30, 311,961.45 and 83,404.70 is: 125,107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,974.30 : 311,961.45 = 83,404.70 : x
  2. Step 2: Convert to fraction form
    207,974.30/311,961.45 = 83,404.70/x
  3. Step 3: Cross multiply
    207,974.30x = 311,961.45 × 83,404.70
  4. Step 4: Simplify right side
    207,974.30x = 26,019,051,148.82
  5. Step 5: Solve for x
    x = 26,019,051,148.82/207,974.30
  6. Step 6: Final answer
    x = 125,107.05

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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.