Home / 207,979.76-311,969.65-67,738.39

Finding the Fourth Proportional to 207,979.76, 311,969.65 and 67,738.39

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Solution

The fourth proportional to 207,979.76, 311,969.65 and 67,738.39 is: 101,607.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,979.76 : 311,969.65 = 67,738.39 : x
  2. Step 2: Convert to fraction form
    207,979.76/311,969.65 = 67,738.39/x
  3. Step 3: Cross multiply
    207,979.76x = 311,969.65 × 67,738.39
  4. Step 4: Simplify right side
    207,979.76x = 21,132,321,819.86
  5. Step 5: Solve for x
    x = 21,132,321,819.86/207,979.76
  6. Step 6: Final answer
    x = 101,607.59

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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.