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Finding the Third Proportional to 87,695 and 189,403

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Solution

The third proportional to 87,695 and 189,403 is: 409,071.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,695 : 189,403 = 189,403 : x
  2. Step 2: Convert to fraction form
    87,695/189,403 = 189,403/x
  3. Step 3: Cross multiply
    87,695x = 189,403 × 189,403
  4. Step 4: Simplify right side
    87,695x = 35,873,496,409
  5. Step 5: Solve for x
    x = 35,873,496,409/87,695
  6. Step 6: Final answer
    x = 409,071.17

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.