Home / 189,388.13-261,353.79-108,812.97

Finding the Fourth Proportional to 189,388.13, 261,353.79 and 108,812.97

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Solution

The fourth proportional to 189,388.13, 261,353.79 and 108,812.97 is: 150,160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,388.13 : 261,353.79 = 108,812.97 : x
  2. Step 2: Convert to fraction form
    189,388.13/261,353.79 = 108,812.97/x
  3. Step 3: Cross multiply
    189,388.13x = 261,353.79 × 108,812.97
  4. Step 4: Simplify right side
    189,388.13x = 28,438,682,110.66
  5. Step 5: Solve for x
    x = 28,438,682,110.66/189,388.13
  6. Step 6: Final answer
    x = 150,160.85

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1.5x scale

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.