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Finding the Third Proportional to 129,861.67 and 318,080.36

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Solution

The third proportional to 129,861.67 and 318,080.36 is: 779,099.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,861.67 : 318,080.36 = 318,080.36 : x
  2. Step 2: Convert to fraction form
    129,861.67/318,080.36 = 318,080.36/x
  3. Step 3: Cross multiply
    129,861.67x = 318,080.36 × 318,080.36
  4. Step 4: Simplify right side
    129,861.67x = 101,175,112,535.13
  5. Step 5: Solve for x
    x = 101,175,112,535.13/129,861.67
  6. Step 6: Final answer
    x = 779,099.13

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.