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Finding the Third Proportional to 84,685 and 131,282

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Solution

The third proportional to 84,685 and 131,282 is: 203,518.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,685 : 131,282 = 131,282 : x
  2. Step 2: Convert to fraction form
    84,685/131,282 = 131,282/x
  3. Step 3: Cross multiply
    84,685x = 131,282 × 131,282
  4. Step 4: Simplify right side
    84,685x = 17,234,963,524
  5. Step 5: Solve for x
    x = 17,234,963,524/84,685
  6. Step 6: Final answer
    x = 203,518.49

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.