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Finding the Third Proportional to 78,213 and 170,771

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Solution

The third proportional to 78,213 and 170,771 is: 372,863.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,213 : 170,771 = 170,771 : x
  2. Step 2: Convert to fraction form
    78,213/170,771 = 170,771/x
  3. Step 3: Cross multiply
    78,213x = 170,771 × 170,771
  4. Step 4: Simplify right side
    78,213x = 29,162,734,441
  5. Step 5: Solve for x
    x = 29,162,734,441/78,213
  6. Step 6: Final answer
    x = 372,863.01

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.