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Finding the Third Proportional to 80,490 and 122,459

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Solution

The third proportional to 80,490 and 122,459 is: 186,311.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,490 : 122,459 = 122,459 : x
  2. Step 2: Convert to fraction form
    80,490/122,459 = 122,459/x
  3. Step 3: Cross multiply
    80,490x = 122,459 × 122,459
  4. Step 4: Simplify right side
    80,490x = 14,996,206,681
  5. Step 5: Solve for x
    x = 14,996,206,681/80,490
  6. Step 6: Final answer
    x = 186,311.43

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.