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Finding the Third Proportional to 87,580 and 189,704

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Solution

The third proportional to 87,580 and 189,704 is: 410,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,580 : 189,704 = 189,704 : x
  2. Step 2: Convert to fraction form
    87,580/189,704 = 189,704/x
  3. Step 3: Cross multiply
    87,580x = 189,704 × 189,704
  4. Step 4: Simplify right side
    87,580x = 35,987,607,616
  5. Step 5: Solve for x
    x = 35,987,607,616/87,580
  6. Step 6: Final answer
    x = 410,911.25

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.