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Finding the Fourth Proportional to 84,169.26, 125,942.04 and 67,478.81

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Solution

The fourth proportional to 84,169.26, 125,942.04 and 67,478.81 is: 100,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,169.26 : 125,942.04 = 67,478.81 : x
  2. Step 2: Convert to fraction form
    84,169.26/125,942.04 = 67,478.81/x
  3. Step 3: Cross multiply
    84,169.26x = 125,942.04 × 67,478.81
  4. Step 4: Simplify right side
    84,169.26x = 8,498,418,358.46
  5. Step 5: Solve for x
    x = 8,498,418,358.46/84,169.26
  6. Step 6: Final answer
    x = 100,968.20

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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.