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Finding the Third Proportional to 120,880 and 187,636

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Solution

The third proportional to 120,880 and 187,636 is: 291,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,880 : 187,636 = 187,636 : x
  2. Step 2: Convert to fraction form
    120,880/187,636 = 187,636/x
  3. Step 3: Cross multiply
    120,880x = 187,636 × 187,636
  4. Step 4: Simplify right side
    120,880x = 35,207,268,496
  5. Step 5: Solve for x
    x = 35,207,268,496/120,880
  6. Step 6: Final answer
    x = 291,258.01

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.