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Finding the Third Proportional to 61,411 and 128,073

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Solution

The third proportional to 61,411 and 128,073 is: 267,096.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,411 : 128,073 = 128,073 : x
  2. Step 2: Convert to fraction form
    61,411/128,073 = 128,073/x
  3. Step 3: Cross multiply
    61,411x = 128,073 × 128,073
  4. Step 4: Simplify right side
    61,411x = 16,402,693,329
  5. Step 5: Solve for x
    x = 16,402,693,329/61,411
  6. Step 6: Final answer
    x = 267,096.99

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.