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Finding the Third Proportional to 81,512 and 168,262

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Solution

The third proportional to 81,512 and 168,262 is: 347,336.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512 : 168,262 = 168,262 : x
  2. Step 2: Convert to fraction form
    81,512/168,262 = 168,262/x
  3. Step 3: Cross multiply
    81,512x = 168,262 × 168,262
  4. Step 4: Simplify right side
    81,512x = 28,312,100,644
  5. Step 5: Solve for x
    x = 28,312,100,644/81,512
  6. Step 6: Final answer
    x = 347,336.60

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.