Home / 130,866.69-195,912.52-80,785.75

Finding the Fourth Proportional to 130,866.69, 195,912.52 and 80,785.75

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Solution

The fourth proportional to 130,866.69, 195,912.52 and 80,785.75 is: 120,939.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,866.69 : 195,912.52 = 80,785.75 : x
  2. Step 2: Convert to fraction form
    130,866.69/195,912.52 = 80,785.75/x
  3. Step 3: Cross multiply
    130,866.69x = 195,912.52 × 80,785.75
  4. Step 4: Simplify right side
    130,866.69x = 15,826,940,150.41
  5. Step 5: Solve for x
    x = 15,826,940,150.41/130,866.69
  6. Step 6: Final answer
    x = 120,939.41

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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.