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Finding the Third Proportional to 79,209 and 170,892

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Solution

The third proportional to 79,209 and 170,892 is: 368,696.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,209 : 170,892 = 170,892 : x
  2. Step 2: Convert to fraction form
    79,209/170,892 = 170,892/x
  3. Step 3: Cross multiply
    79,209x = 170,892 × 170,892
  4. Step 4: Simplify right side
    79,209x = 29,204,075,664
  5. Step 5: Solve for x
    x = 29,204,075,664/79,209
  6. Step 6: Final answer
    x = 368,696.43

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.