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Finding the Third Proportional to 85,869 and 126,318

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Solution

The third proportional to 85,869 and 126,318 is: 185,820.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,869 : 126,318 = 126,318 : x
  2. Step 2: Convert to fraction form
    85,869/126,318 = 126,318/x
  3. Step 3: Cross multiply
    85,869x = 126,318 × 126,318
  4. Step 4: Simplify right side
    85,869x = 15,956,237,124
  5. Step 5: Solve for x
    x = 15,956,237,124/85,869
  6. Step 6: Final answer
    x = 185,820.69

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.