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Finding the Third Proportional to 78,778 and 118,225

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Solution

The third proportional to 78,778 and 118,225 is: 177,424.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,778 : 118,225 = 118,225 : x
  2. Step 2: Convert to fraction form
    78,778/118,225 = 118,225/x
  3. Step 3: Cross multiply
    78,778x = 118,225 × 118,225
  4. Step 4: Simplify right side
    78,778x = 13,977,150,625
  5. Step 5: Solve for x
    x = 13,977,150,625/78,778
  6. Step 6: Final answer
    x = 177,424.54

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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.