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Finding the Third Proportional to 103,638 and 162,813

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Solution

The third proportional to 103,638 and 162,813 is: 255,775.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638 : 162,813 = 162,813 : x
  2. Step 2: Convert to fraction form
    103,638/162,813 = 162,813/x
  3. Step 3: Cross multiply
    103,638x = 162,813 × 162,813
  4. Step 4: Simplify right side
    103,638x = 26,508,072,969
  5. Step 5: Solve for x
    x = 26,508,072,969/103,638
  6. Step 6: Final answer
    x = 255,775.61

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.