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Finding the Third Proportional to 121,943 and 187,671

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Solution

The third proportional to 121,943 and 187,671 is: 288,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,943 : 187,671 = 187,671 : x
  2. Step 2: Convert to fraction form
    121,943/187,671 = 187,671/x
  3. Step 3: Cross multiply
    121,943x = 187,671 × 187,671
  4. Step 4: Simplify right side
    121,943x = 35,220,404,241
  5. Step 5: Solve for x
    x = 35,220,404,241/121,943
  6. Step 6: Final answer
    x = 288,826.78

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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.