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Finding the Third Proportional to 138,686.06 and 208,032.38

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Solution

The third proportional to 138,686.06 and 208,032.38 is: 312,053.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,686.06 : 208,032.38 = 208,032.38 : x
  2. Step 2: Convert to fraction form
    138,686.06/208,032.38 = 208,032.38/x
  3. Step 3: Cross multiply
    138,686.06x = 208,032.38 × 208,032.38
  4. Step 4: Simplify right side
    138,686.06x = 43,277,469,048.14
  5. Step 5: Solve for x
    x = 43,277,469,048.14/138,686.06
  6. Step 6: Final answer
    x = 312,053.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.