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Finding the Third Proportional to 81,240 and 164,712

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Solution

The third proportional to 81,240 and 164,712 is: 333,949.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240 : 164,712 = 164,712 : x
  2. Step 2: Convert to fraction form
    81,240/164,712 = 164,712/x
  3. Step 3: Cross multiply
    81,240x = 164,712 × 164,712
  4. Step 4: Simplify right side
    81,240x = 27,130,042,944
  5. Step 5: Solve for x
    x = 27,130,042,944/81,240
  6. Step 6: Final answer
    x = 333,949.32

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.