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Finding the Fourth Proportional to 88,891.80, 122,769.71 and 82,165.75

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Solution

The fourth proportional to 88,891.80, 122,769.71 and 82,165.75 is: 113,480.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,891.80 : 122,769.71 = 82,165.75 : x
  2. Step 2: Convert to fraction form
    88,891.80/122,769.71 = 82,165.75/x
  3. Step 3: Cross multiply
    88,891.80x = 122,769.71 × 82,165.75
  4. Step 4: Simplify right side
    88,891.80x = 10,087,464,581.68
  5. Step 5: Solve for x
    x = 10,087,464,581.68/88,891.80
  6. Step 6: Final answer
    x = 113,480.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.