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Finding the Third Proportional to 77,922 and 170,253

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Solution

The third proportional to 77,922 and 170,253 is: 371,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,922 : 170,253 = 170,253 : x
  2. Step 2: Convert to fraction form
    77,922/170,253 = 170,253/x
  3. Step 3: Cross multiply
    77,922x = 170,253 × 170,253
  4. Step 4: Simplify right side
    77,922x = 28,986,084,009
  5. Step 5: Solve for x
    x = 28,986,084,009/77,922
  6. Step 6: Final answer
    x = 371,988.45

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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.