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Finding the Third Proportional to 84,521 and 131,631

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Solution

The third proportional to 84,521 and 131,631 is: 204,999.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,521 : 131,631 = 131,631 : x
  2. Step 2: Convert to fraction form
    84,521/131,631 = 131,631/x
  3. Step 3: Cross multiply
    84,521x = 131,631 × 131,631
  4. Step 4: Simplify right side
    84,521x = 17,326,720,161
  5. Step 5: Solve for x
    x = 17,326,720,161/84,521
  6. Step 6: Final answer
    x = 204,999.00

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.