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Finding the Third Proportional to 80,915 and 165,043

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Solution

The third proportional to 80,915 and 165,043 is: 336,639.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,915 : 165,043 = 165,043 : x
  2. Step 2: Convert to fraction form
    80,915/165,043 = 165,043/x
  3. Step 3: Cross multiply
    80,915x = 165,043 × 165,043
  4. Step 4: Simplify right side
    80,915x = 27,239,191,849
  5. Step 5: Solve for x
    x = 27,239,191,849/80,915
  6. Step 6: Final answer
    x = 336,639.58

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.