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Finding the Third Proportional to 75,680 and 164,460

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Solution

The third proportional to 75,680 and 164,460 is: 357,387.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,680 : 164,460 = 164,460 : x
  2. Step 2: Convert to fraction form
    75,680/164,460 = 164,460/x
  3. Step 3: Cross multiply
    75,680x = 164,460 × 164,460
  4. Step 4: Simplify right side
    75,680x = 27,047,091,600
  5. Step 5: Solve for x
    x = 27,047,091,600/75,680
  6. Step 6: Final answer
    x = 357,387.57

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.