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Finding the Third Proportional to 111,783 and 169,119

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Solution

The third proportional to 111,783 and 169,119 is: 255,863.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,783 : 169,119 = 169,119 : x
  2. Step 2: Convert to fraction form
    111,783/169,119 = 169,119/x
  3. Step 3: Cross multiply
    111,783x = 169,119 × 169,119
  4. Step 4: Simplify right side
    111,783x = 28,601,236,161
  5. Step 5: Solve for x
    x = 28,601,236,161/111,783
  6. Step 6: Final answer
    x = 255,863.92

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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.