Home / 207,910.16-311,898.89-81,481.85

Finding the Fourth Proportional to 207,910.16, 311,898.89 and 81,481.85

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Solution

The fourth proportional to 207,910.16, 311,898.89 and 81,481.85 is: 122,235.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,910.16 : 311,898.89 = 81,481.85 : x
  2. Step 2: Convert to fraction form
    207,910.16/311,898.89 = 81,481.85/x
  3. Step 3: Cross multiply
    207,910.16x = 311,898.89 × 81,481.85
  4. Step 4: Simplify right side
    207,910.16x = 25,414,096,603.24
  5. Step 5: Solve for x
    x = 25,414,096,603.24/207,910.16
  6. Step 6: Final answer
    x = 122,235.96

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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.