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Finding the Third Proportional to 74,745 and 115,853.63

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Solution

The third proportional to 74,745 and 115,853.63 is: 179,571.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,745 : 115,853.63 = 115,853.63 : x
  2. Step 2: Convert to fraction form
    74,745/115,853.63 = 115,853.63/x
  3. Step 3: Cross multiply
    74,745x = 115,853.63 × 115,853.63
  4. Step 4: Simplify right side
    74,745x = 13,422,062,425.64
  5. Step 5: Solve for x
    x = 13,422,062,425.64/74,745
  6. Step 6: Final answer
    x = 179,571.38

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.