Home / 128,843.06-193,282.81-40,105.53

Finding the Fourth Proportional to 128,843.06, 193,282.81 and 40,105.53

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Solution

The fourth proportional to 128,843.06, 193,282.81 and 40,105.53 is: 60,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,843.06 : 193,282.81 = 40,105.53 : x
  2. Step 2: Convert to fraction form
    128,843.06/193,282.81 = 40,105.53/x
  3. Step 3: Cross multiply
    128,843.06x = 193,282.81 × 40,105.53
  4. Step 4: Simplify right side
    128,843.06x = 7,751,709,434.68
  5. Step 5: Solve for x
    x = 7,751,709,434.68/128,843.06
  6. Step 6: Final answer
    x = 60,163.97

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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.