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Finding the Third Proportional to 128,422.13 and 204,525

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Solution

The third proportional to 128,422.13 and 204,525 is: 325,726.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,422.13 : 204,525 = 204,525 : x
  2. Step 2: Convert to fraction form
    128,422.13/204,525 = 204,525/x
  3. Step 3: Cross multiply
    128,422.13x = 204,525 × 204,525
  4. Step 4: Simplify right side
    128,422.13x = 41,830,475,625
  5. Step 5: Solve for x
    x = 41,830,475,625/128,422.13
  6. Step 6: Final answer
    x = 325,726.39

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.