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Finding the Third Proportional to 79,200 and 172,368

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Solution

The third proportional to 79,200 and 172,368 is: 375,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200 : 172,368 = 172,368 : x
  2. Step 2: Convert to fraction form
    79,200/172,368 = 172,368/x
  3. Step 3: Cross multiply
    79,200x = 172,368 × 172,368
  4. Step 4: Simplify right side
    79,200x = 29,710,727,424
  5. Step 5: Solve for x
    x = 29,710,727,424/79,200
  6. Step 6: Final answer
    x = 375,135.45

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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.