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Finding the Third Proportional to 79,290.75 and 108,730.13

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Solution

The third proportional to 79,290.75 and 108,730.13 is: 149,099.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,290.75 : 108,730.13 = 108,730.13 : x
  2. Step 2: Convert to fraction form
    79,290.75/108,730.13 = 108,730.13/x
  3. Step 3: Cross multiply
    79,290.75x = 108,730.13 × 108,730.13
  4. Step 4: Simplify right side
    79,290.75x = 11,822,240,082.52
  5. Step 5: Solve for x
    x = 11,822,240,082.52/79,290.75
  6. Step 6: Final answer
    x = 149,099.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.