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Finding the Third Proportional to 61,146 and 128,940.75

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Solution

The third proportional to 61,146 and 128,940.75 is: 271,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,146 : 128,940.75 = 128,940.75 : x
  2. Step 2: Convert to fraction form
    61,146/128,940.75 = 128,940.75/x
  3. Step 3: Cross multiply
    61,146x = 128,940.75 × 128,940.75
  4. Step 4: Simplify right side
    61,146x = 16,625,717,010.56
  5. Step 5: Solve for x
    x = 16,625,717,010.56/61,146
  6. Step 6: Final answer
    x = 271,901.96

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.