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Finding the Third Proportional to 68,639.91 and 165,300.75

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Solution

The third proportional to 68,639.91 and 165,300.75 is: 398,082.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,639.91 : 165,300.75 = 165,300.75 : x
  2. Step 2: Convert to fraction form
    68,639.91/165,300.75 = 165,300.75/x
  3. Step 3: Cross multiply
    68,639.91x = 165,300.75 × 165,300.75
  4. Step 4: Simplify right side
    68,639.91x = 27,324,337,950.56
  5. Step 5: Solve for x
    x = 27,324,337,950.56/68,639.91
  6. Step 6: Final answer
    x = 398,082.39

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.