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Finding the Third Proportional to 103,980 and 165,285

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Solution

The third proportional to 103,980 and 165,285 is: 262,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,980 : 165,285 = 165,285 : x
  2. Step 2: Convert to fraction form
    103,980/165,285 = 165,285/x
  3. Step 3: Cross multiply
    103,980x = 165,285 × 165,285
  4. Step 4: Simplify right side
    103,980x = 27,319,131,225
  5. Step 5: Solve for x
    x = 27,319,131,225/103,980
  6. Step 6: Final answer
    x = 262,734.48

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.