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Finding the Third Proportional to 74,072 and 103,692

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Solution

The third proportional to 74,072 and 103,692 is: 145,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072 : 103,692 = 103,692 : x
  2. Step 2: Convert to fraction form
    74,072/103,692 = 103,692/x
  3. Step 3: Cross multiply
    74,072x = 103,692 × 103,692
  4. Step 4: Simplify right side
    74,072x = 10,752,030,864
  5. Step 5: Solve for x
    x = 10,752,030,864/74,072
  6. Step 6: Final answer
    x = 145,156.48

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.