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Finding the Third Proportional to 81,021 and 168,495

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Solution

The third proportional to 81,021 and 168,495 is: 350,409.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,021 : 168,495 = 168,495 : x
  2. Step 2: Convert to fraction form
    81,021/168,495 = 168,495/x
  3. Step 3: Cross multiply
    81,021x = 168,495 × 168,495
  4. Step 4: Simplify right side
    81,021x = 28,390,565,025
  5. Step 5: Solve for x
    x = 28,390,565,025/81,021
  6. Step 6: Final answer
    x = 350,409.96

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.