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Finding the Third Proportional to 87,646 and 191,878

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Solution

The third proportional to 87,646 and 191,878 is: 420,066.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,646 : 191,878 = 191,878 : x
  2. Step 2: Convert to fraction form
    87,646/191,878 = 191,878/x
  3. Step 3: Cross multiply
    87,646x = 191,878 × 191,878
  4. Step 4: Simplify right side
    87,646x = 36,817,166,884
  5. Step 5: Solve for x
    x = 36,817,166,884/87,646
  6. Step 6: Final answer
    x = 420,066.71

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.