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Finding the Third Proportional to 90,892 and 186,312

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Solution

The third proportional to 90,892 and 186,312 is: 381,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,892 : 186,312 = 186,312 : x
  2. Step 2: Convert to fraction form
    90,892/186,312 = 186,312/x
  3. Step 3: Cross multiply
    90,892x = 186,312 × 186,312
  4. Step 4: Simplify right side
    90,892x = 34,712,161,344
  5. Step 5: Solve for x
    x = 34,712,161,344/90,892
  6. Step 6: Final answer
    x = 381,905.57

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.