Home / 82,218.32-123,253.66-68,268

Finding the Fourth Proportional to 82,218.32, 123,253.66 and 68,268

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Solution

The fourth proportional to 82,218.32, 123,253.66 and 68,268 is: 102,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,218.32 : 123,253.66 = 68,268 : x
  2. Step 2: Convert to fraction form
    82,218.32/123,253.66 = 68,268/x
  3. Step 3: Cross multiply
    82,218.32x = 123,253.66 × 68,268
  4. Step 4: Simplify right side
    82,218.32x = 8,414,280,860.88
  5. Step 5: Solve for x
    x = 8,414,280,860.88/82,218.32
  6. Step 6: Final answer
    x = 102,340.71

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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.