Home / 82,179.28-122,674.43-72,214.78

Finding the Fourth Proportional to 82,179.28, 122,674.43 and 72,214.78

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Solution

The fourth proportional to 82,179.28, 122,674.43 and 72,214.78 is: 107,799.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,179.28 : 122,674.43 = 72,214.78 : x
  2. Step 2: Convert to fraction form
    82,179.28/122,674.43 = 72,214.78/x
  3. Step 3: Cross multiply
    82,179.28x = 122,674.43 × 72,214.78
  4. Step 4: Simplify right side
    82,179.28x = 8,858,906,974.08
  5. Step 5: Solve for x
    x = 8,858,906,974.08/82,179.28
  6. Step 6: Final answer
    x = 107,799.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.