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Finding the Third Proportional to 126,153 and 189,759

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Solution

The third proportional to 126,153 and 189,759 is: 285,434.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,153 : 189,759 = 189,759 : x
  2. Step 2: Convert to fraction form
    126,153/189,759 = 189,759/x
  3. Step 3: Cross multiply
    126,153x = 189,759 × 189,759
  4. Step 4: Simplify right side
    126,153x = 36,008,478,081
  5. Step 5: Solve for x
    x = 36,008,478,081/126,153
  6. Step 6: Final answer
    x = 285,434.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.