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Finding the Third Proportional to 68,799 and 140,513

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Solution

The third proportional to 68,799 and 140,513 is: 286,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,799 : 140,513 = 140,513 : x
  2. Step 2: Convert to fraction form
    68,799/140,513 = 140,513/x
  3. Step 3: Cross multiply
    68,799x = 140,513 × 140,513
  4. Step 4: Simplify right side
    68,799x = 19,743,903,169
  5. Step 5: Solve for x
    x = 19,743,903,169/68,799
  6. Step 6: Final answer
    x = 286,979.51

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.