Home / 189,138.33-261,012.66-104,258.43

Finding the Fourth Proportional to 189,138.33, 261,012.66 and 104,258.43

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Solution

The fourth proportional to 189,138.33, 261,012.66 and 104,258.43 is: 143,877.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,138.33 : 261,012.66 = 104,258.43 : x
  2. Step 2: Convert to fraction form
    189,138.33/261,012.66 = 104,258.43/x
  3. Step 3: Cross multiply
    189,138.33x = 261,012.66 × 104,258.43
  4. Step 4: Simplify right side
    189,138.33x = 27,212,770,141.72
  5. Step 5: Solve for x
    x = 27,212,770,141.72/189,138.33
  6. Step 6: Final answer
    x = 143,877.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.