Home / 138,261.33-207,396.05-54,018.09

Finding the Fourth Proportional to 138,261.33, 207,396.05 and 54,018.09

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Solution

The fourth proportional to 138,261.33, 207,396.05 and 54,018.09 is: 81,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,261.33 : 207,396.05 = 54,018.09 : x
  2. Step 2: Convert to fraction form
    138,261.33/207,396.05 = 54,018.09/x
  3. Step 3: Cross multiply
    138,261.33x = 207,396.05 × 54,018.09
  4. Step 4: Simplify right side
    138,261.33x = 11,203,138,224.45
  5. Step 5: Solve for x
    x = 11,203,138,224.45/138,261.33
  6. Step 6: Final answer
    x = 81,028.72

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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.