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Finding the Third Proportional to 84,540 and 178,512

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Solution

The third proportional to 84,540 and 178,512 is: 376,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,540 : 178,512 = 178,512 : x
  2. Step 2: Convert to fraction form
    84,540/178,512 = 178,512/x
  3. Step 3: Cross multiply
    84,540x = 178,512 × 178,512
  4. Step 4: Simplify right side
    84,540x = 31,866,534,144
  5. Step 5: Solve for x
    x = 31,866,534,144/84,540
  6. Step 6: Final answer
    x = 376,940.31

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.