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Finding the Fourth Proportional to 84,301.65, 126,080.67 and 75,006.90

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Solution

The fourth proportional to 84,301.65, 126,080.67 and 75,006.90 is: 112,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,301.65 : 126,080.67 = 75,006.90 : x
  2. Step 2: Convert to fraction form
    84,301.65/126,080.67 = 75,006.90/x
  3. Step 3: Cross multiply
    84,301.65x = 126,080.67 × 75,006.90
  4. Step 4: Simplify right side
    84,301.65x = 9,456,920,206.62
  5. Step 5: Solve for x
    x = 9,456,920,206.62/84,301.65
  6. Step 6: Final answer
    x = 112,179.54

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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.