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Finding the Third Proportional to 129,624 and 199,963.50

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Solution

The third proportional to 129,624 and 199,963.50 is: 308,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,624 : 199,963.50 = 199,963.50 : x
  2. Step 2: Convert to fraction form
    129,624/199,963.50 = 199,963.50/x
  3. Step 3: Cross multiply
    129,624x = 199,963.50 × 199,963.50
  4. Step 4: Simplify right side
    129,624x = 39,985,401,332.25
  5. Step 5: Solve for x
    x = 39,985,401,332.25/129,624
  6. Step 6: Final answer
    x = 308,472.21

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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.