Home / 107,910.20-161,865.30-65,919.80

Finding the Fourth Proportional to 107,910.20, 161,865.30 and 65,919.80

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Solution

The fourth proportional to 107,910.20, 161,865.30 and 65,919.80 is: 98,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,910.20 : 161,865.30 = 65,919.80 : x
  2. Step 2: Convert to fraction form
    107,910.20/161,865.30 = 65,919.80/x
  3. Step 3: Cross multiply
    107,910.20x = 161,865.30 × 65,919.80
  4. Step 4: Simplify right side
    107,910.20x = 10,670,128,202.94
  5. Step 5: Solve for x
    x = 10,670,128,202.94/107,910.20
  6. Step 6: Final answer
    x = 98,879.70

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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.