Home / 135,448.24-186,919.94-81,722.86

Finding the Fourth Proportional to 135,448.24, 186,919.94 and 81,722.86

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Solution

The fourth proportional to 135,448.24, 186,919.94 and 81,722.86 is: 112,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,448.24 : 186,919.94 = 81,722.86 : x
  2. Step 2: Convert to fraction form
    135,448.24/186,919.94 = 81,722.86/x
  3. Step 3: Cross multiply
    135,448.24x = 186,919.94 × 81,722.86
  4. Step 4: Simplify right side
    135,448.24x = 15,275,632,087.83
  5. Step 5: Solve for x
    x = 15,275,632,087.83/135,448.24
  6. Step 6: Final answer
    x = 112,778.37

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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.