Home / 82,161.06-123,241.32-19,831.56

Finding the Fourth Proportional to 82,161.06, 123,241.32 and 19,831.56

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Solution

The fourth proportional to 82,161.06, 123,241.32 and 19,831.56 is: 29,747.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,161.06 : 123,241.32 = 19,831.56 : x
  2. Step 2: Convert to fraction form
    82,161.06/123,241.32 = 19,831.56/x
  3. Step 3: Cross multiply
    82,161.06x = 123,241.32 × 19,831.56
  4. Step 4: Simplify right side
    82,161.06x = 2,444,067,632.06
  5. Step 5: Solve for x
    x = 2,444,067,632.06/82,161.06
  6. Step 6: Final answer
    x = 29,747.27

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1.5x scale

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.