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Finding the Third Proportional to 76,638 and 165,065

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Solution

The third proportional to 76,638 and 165,065 is: 355,521.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,638 : 165,065 = 165,065 : x
  2. Step 2: Convert to fraction form
    76,638/165,065 = 165,065/x
  3. Step 3: Cross multiply
    76,638x = 165,065 × 165,065
  4. Step 4: Simplify right side
    76,638x = 27,246,454,225
  5. Step 5: Solve for x
    x = 27,246,454,225/76,638
  6. Step 6: Final answer
    x = 355,521.47

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.