Home / 207,948.52-311,922.78-67,721.32

Finding the Fourth Proportional to 207,948.52, 311,922.78 and 67,721.32

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Solution

The fourth proportional to 207,948.52, 311,922.78 and 67,721.32 is: 101,581.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,948.52 : 311,922.78 = 67,721.32 : x
  2. Step 2: Convert to fraction form
    207,948.52/311,922.78 = 67,721.32/x
  3. Step 3: Cross multiply
    207,948.52x = 311,922.78 × 67,721.32
  4. Step 4: Simplify right side
    207,948.52x = 21,123,822,399.67
  5. Step 5: Solve for x
    x = 21,123,822,399.67/207,948.52
  6. Step 6: Final answer
    x = 101,581.98

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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.