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Finding the Third Proportional to 111,787 and 169,125

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Solution

The third proportional to 111,787 and 169,125 is: 255,872.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,787 : 169,125 = 169,125 : x
  2. Step 2: Convert to fraction form
    111,787/169,125 = 169,125/x
  3. Step 3: Cross multiply
    111,787x = 169,125 × 169,125
  4. Step 4: Simplify right side
    111,787x = 28,603,265,625
  5. Step 5: Solve for x
    x = 28,603,265,625/111,787
  6. Step 6: Final answer
    x = 255,872.92

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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.