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Finding the Third Proportional to 129,012 and 199,344

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Solution

The third proportional to 129,012 and 199,344 is: 308,018.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,012 : 199,344 = 199,344 : x
  2. Step 2: Convert to fraction form
    129,012/199,344 = 199,344/x
  3. Step 3: Cross multiply
    129,012x = 199,344 × 199,344
  4. Step 4: Simplify right side
    129,012x = 39,738,030,336
  5. Step 5: Solve for x
    x = 39,738,030,336/129,012
  6. Step 6: Final answer
    x = 308,018.09

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.