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Finding the Third Proportional to 81,316 and 149,132

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Solution

The third proportional to 81,316 and 149,132 is: 273,505.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,316 : 149,132 = 149,132 : x
  2. Step 2: Convert to fraction form
    81,316/149,132 = 149,132/x
  3. Step 3: Cross multiply
    81,316x = 149,132 × 149,132
  4. Step 4: Simplify right side
    81,316x = 22,240,353,424
  5. Step 5: Solve for x
    x = 22,240,353,424/81,316
  6. Step 6: Final answer
    x = 273,505.26

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Why These Related Problems?

These problems maintain the same ratio (1.83) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.