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Finding the Third Proportional to 68,478 and 103,203

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Solution

The third proportional to 68,478 and 103,203 is: 155,536.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,478 : 103,203 = 103,203 : x
  2. Step 2: Convert to fraction form
    68,478/103,203 = 103,203/x
  3. Step 3: Cross multiply
    68,478x = 103,203 × 103,203
  4. Step 4: Simplify right side
    68,478x = 10,650,859,209
  5. Step 5: Solve for x
    x = 10,650,859,209/68,478
  6. Step 6: Final answer
    x = 155,536.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.