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Finding the Third Proportional to 102,980 and 155,361

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Solution

The third proportional to 102,980 and 155,361 is: 234,385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,980 : 155,361 = 155,361 : x
  2. Step 2: Convert to fraction form
    102,980/155,361 = 155,361/x
  3. Step 3: Cross multiply
    102,980x = 155,361 × 155,361
  4. Step 4: Simplify right side
    102,980x = 24,137,040,321
  5. Step 5: Solve for x
    x = 24,137,040,321/102,980
  6. Step 6: Final answer
    x = 234,385.71

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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.