Home / 138,105.86-206,011.24-135,822.26

Finding the Fourth Proportional to 138,105.86, 206,011.24 and 135,822.26

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Solution

The fourth proportional to 138,105.86, 206,011.24 and 135,822.26 is: 202,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105.86 : 206,011.24 = 135,822.26 : x
  2. Step 2: Convert to fraction form
    138,105.86/206,011.24 = 135,822.26/x
  3. Step 3: Cross multiply
    138,105.86x = 206,011.24 × 135,822.26
  4. Step 4: Simplify right side
    138,105.86x = 27,980,912,202.20
  5. Step 5: Solve for x
    x = 27,980,912,202.20/138,105.86
  6. Step 6: Final answer
    x = 202,604.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.