Home / 207,917.20-311,875.80-123,717.70

Finding the Fourth Proportional to 207,917.20, 311,875.80 and 123,717.70

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Solution

The fourth proportional to 207,917.20, 311,875.80 and 123,717.70 is: 185,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,917.20 : 311,875.80 = 123,717.70 : x
  2. Step 2: Convert to fraction form
    207,917.20/311,875.80 = 123,717.70/x
  3. Step 3: Cross multiply
    207,917.20x = 311,875.80 × 123,717.70
  4. Step 4: Simplify right side
    207,917.20x = 38,584,556,661.66
  5. Step 5: Solve for x
    x = 38,584,556,661.66/207,917.20
  6. Step 6: Final answer
    x = 185,576.55

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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.