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Finding the Third Proportional to 78,954.75 and 104,820.75

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Solution

The third proportional to 78,954.75 and 104,820.75 is: 139,160.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,954.75 : 104,820.75 = 104,820.75 : x
  2. Step 2: Convert to fraction form
    78,954.75/104,820.75 = 104,820.75/x
  3. Step 3: Cross multiply
    78,954.75x = 104,820.75 × 104,820.75
  4. Step 4: Simplify right side
    78,954.75x = 10,987,389,630.56
  5. Step 5: Solve for x
    x = 10,987,389,630.56/78,954.75
  6. Step 6: Final answer
    x = 139,160.59

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.