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Finding the Third Proportional to 90,258 and 136,563

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Solution

The third proportional to 90,258 and 136,563 is: 206,623.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,258 : 136,563 = 136,563 : x
  2. Step 2: Convert to fraction form
    90,258/136,563 = 136,563/x
  3. Step 3: Cross multiply
    90,258x = 136,563 × 136,563
  4. Step 4: Simplify right side
    90,258x = 18,649,452,969
  5. Step 5: Solve for x
    x = 18,649,452,969/90,258
  6. Step 6: Final answer
    x = 206,623.82

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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.