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Finding the Third Proportional to 87,979 and 191,835

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Solution

The third proportional to 87,979 and 191,835 is: 418,289.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,979 : 191,835 = 191,835 : x
  2. Step 2: Convert to fraction form
    87,979/191,835 = 191,835/x
  3. Step 3: Cross multiply
    87,979x = 191,835 × 191,835
  4. Step 4: Simplify right side
    87,979x = 36,800,667,225
  5. Step 5: Solve for x
    x = 36,800,667,225/87,979
  6. Step 6: Final answer
    x = 418,289.22

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.