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Finding the Third Proportional to 61,285 and 131,318

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Solution

The third proportional to 61,285 and 131,318 is: 281,380.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,285 : 131,318 = 131,318 : x
  2. Step 2: Convert to fraction form
    61,285/131,318 = 131,318/x
  3. Step 3: Cross multiply
    61,285x = 131,318 × 131,318
  4. Step 4: Simplify right side
    61,285x = 17,244,417,124
  5. Step 5: Solve for x
    x = 17,244,417,124/61,285
  6. Step 6: Final answer
    x = 281,380.72

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.