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Finding the Third Proportional to 87,312 and 186,072

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Solution

The third proportional to 87,312 and 186,072 is: 396,541.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,312 : 186,072 = 186,072 : x
  2. Step 2: Convert to fraction form
    87,312/186,072 = 186,072/x
  3. Step 3: Cross multiply
    87,312x = 186,072 × 186,072
  4. Step 4: Simplify right side
    87,312x = 34,622,789,184
  5. Step 5: Solve for x
    x = 34,622,789,184/87,312
  6. Step 6: Final answer
    x = 396,541.02

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.