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Finding the Third Proportional to 86,520 and 187,788

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Solution

The third proportional to 86,520 and 187,788 is: 407,585.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,520 : 187,788 = 187,788 : x
  2. Step 2: Convert to fraction form
    86,520/187,788 = 187,788/x
  3. Step 3: Cross multiply
    86,520x = 187,788 × 187,788
  4. Step 4: Simplify right side
    86,520x = 35,264,332,944
  5. Step 5: Solve for x
    x = 35,264,332,944/86,520
  6. Step 6: Final answer
    x = 407,585.91

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.