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Finding the Third Proportional to 105,789 and 163,908

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Solution

The third proportional to 105,789 and 163,908 is: 253,956.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,789 : 163,908 = 163,908 : x
  2. Step 2: Convert to fraction form
    105,789/163,908 = 163,908/x
  3. Step 3: Cross multiply
    105,789x = 163,908 × 163,908
  4. Step 4: Simplify right side
    105,789x = 26,865,832,464
  5. Step 5: Solve for x
    x = 26,865,832,464/105,789
  6. Step 6: Final answer
    x = 253,956.77

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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.