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Finding the Third Proportional to 86,640 and 186,176

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Solution

The third proportional to 86,640 and 186,176 is: 400,063.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640 : 186,176 = 186,176 : x
  2. Step 2: Convert to fraction form
    86,640/186,176 = 186,176/x
  3. Step 3: Cross multiply
    86,640x = 186,176 × 186,176
  4. Step 4: Simplify right side
    86,640x = 34,661,502,976
  5. Step 5: Solve for x
    x = 34,661,502,976/86,640
  6. Step 6: Final answer
    x = 400,063.52

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.