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Finding the Third Proportional to 78,106.75 and 118,255.75

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Solution

The third proportional to 78,106.75 and 118,255.75 is: 179,042.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,106.75 : 118,255.75 = 118,255.75 : x
  2. Step 2: Convert to fraction form
    78,106.75/118,255.75 = 118,255.75/x
  3. Step 3: Cross multiply
    78,106.75x = 118,255.75 × 118,255.75
  4. Step 4: Simplify right side
    78,106.75x = 13,984,422,408.06
  5. Step 5: Solve for x
    x = 13,984,422,408.06/78,106.75
  6. Step 6: Final answer
    x = 179,042.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.