Home / 207,409.38-311,044.89-81,016.86

Finding the Fourth Proportional to 207,409.38, 311,044.89 and 81,016.86

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Solution

The fourth proportional to 207,409.38, 311,044.89 and 81,016.86 is: 121,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,409.38 : 311,044.89 = 81,016.86 : x
  2. Step 2: Convert to fraction form
    207,409.38/311,044.89 = 81,016.86/x
  3. Step 3: Cross multiply
    207,409.38x = 311,044.89 × 81,016.86
  4. Step 4: Simplify right side
    207,409.38x = 25,199,880,306.85
  5. Step 5: Solve for x
    x = 25,199,880,306.85/207,409.38
  6. Step 6: Final answer
    x = 121,498.27

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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.