Home / 185,949.76-278,767.44-80,689.12

Finding the Fourth Proportional to 185,949.76, 278,767.44 and 80,689.12

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Solution

The fourth proportional to 185,949.76, 278,767.44 and 80,689.12 is: 120,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,949.76 : 278,767.44 = 80,689.12 : x
  2. Step 2: Convert to fraction form
    185,949.76/278,767.44 = 80,689.12/x
  3. Step 3: Cross multiply
    185,949.76x = 278,767.44 × 80,689.12
  4. Step 4: Simplify right side
    185,949.76x = 22,493,499,418.25
  5. Step 5: Solve for x
    x = 22,493,499,418.25/185,949.76
  6. Step 6: Final answer
    x = 120,965.47

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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.