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Finding the Third Proportional to 126,139.78 and 210,225.38

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Solution

The third proportional to 126,139.78 and 210,225.38 is: 350,362.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,139.78 : 210,225.38 = 210,225.38 : x
  2. Step 2: Convert to fraction form
    126,139.78/210,225.38 = 210,225.38/x
  3. Step 3: Cross multiply
    126,139.78x = 210,225.38 × 210,225.38
  4. Step 4: Simplify right side
    126,139.78x = 44,194,708,293.89
  5. Step 5: Solve for x
    x = 44,194,708,293.89/126,139.78
  6. Step 6: Final answer
    x = 350,362.97

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.