Home / 136,919.19-204,879.20-80,786.19

Finding the Fourth Proportional to 136,919.19, 204,879.20 and 80,786.19

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Solution

The fourth proportional to 136,919.19, 204,879.20 and 80,786.19 is: 120,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,919.19 : 204,879.20 = 80,786.19 : x
  2. Step 2: Convert to fraction form
    136,919.19/204,879.20 = 80,786.19/x
  3. Step 3: Cross multiply
    136,919.19x = 204,879.20 × 80,786.19
  4. Step 4: Simplify right side
    136,919.19x = 16,551,409,574.32
  5. Step 5: Solve for x
    x = 16,551,409,574.32/136,919.19
  6. Step 6: Final answer
    x = 120,884.51

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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.