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Finding the Third Proportional to 74,122 and 114,945

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Solution

The third proportional to 74,122 and 114,945 is: 178,251.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,122 : 114,945 = 114,945 : x
  2. Step 2: Convert to fraction form
    74,122/114,945 = 114,945/x
  3. Step 3: Cross multiply
    74,122x = 114,945 × 114,945
  4. Step 4: Simplify right side
    74,122x = 13,212,353,025
  5. Step 5: Solve for x
    x = 13,212,353,025/74,122
  6. Step 6: Final answer
    x = 178,251.44

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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.