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Finding the Third Proportional to 109,360 and 171,330

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Solution

The third proportional to 109,360 and 171,330 is: 268,415.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,360 : 171,330 = 171,330 : x
  2. Step 2: Convert to fraction form
    109,360/171,330 = 171,330/x
  3. Step 3: Cross multiply
    109,360x = 171,330 × 171,330
  4. Step 4: Simplify right side
    109,360x = 29,353,968,900
  5. Step 5: Solve for x
    x = 29,353,968,900/109,360
  6. Step 6: Final answer
    x = 268,415.96

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.