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Finding the Third Proportional to 136,890 and 204,778

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Solution

The third proportional to 136,890 and 204,778 is: 306,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,890 : 204,778 = 204,778 : x
  2. Step 2: Convert to fraction form
    136,890/204,778 = 204,778/x
  3. Step 3: Cross multiply
    136,890x = 204,778 × 204,778
  4. Step 4: Simplify right side
    136,890x = 41,934,029,284
  5. Step 5: Solve for x
    x = 41,934,029,284/136,890
  6. Step 6: Final answer
    x = 306,333.77

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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.