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Finding the Third Proportional to 87,142 and 134,628

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Solution

The third proportional to 87,142 and 134,628 is: 207,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,142 : 134,628 = 134,628 : x
  2. Step 2: Convert to fraction form
    87,142/134,628 = 134,628/x
  3. Step 3: Cross multiply
    87,142x = 134,628 × 134,628
  4. Step 4: Simplify right side
    87,142x = 18,124,698,384
  5. Step 5: Solve for x
    x = 18,124,698,384/87,142
  6. Step 6: Final answer
    x = 207,990.39

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.