Home / 129,990.72-195,015.22-41,247.12

Finding the Fourth Proportional to 129,990.72, 195,015.22 and 41,247.12

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Solution

The fourth proportional to 129,990.72, 195,015.22 and 41,247.12 is: 61,879.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,990.72 : 195,015.22 = 41,247.12 : x
  2. Step 2: Convert to fraction form
    129,990.72/195,015.22 = 41,247.12/x
  3. Step 3: Cross multiply
    129,990.72x = 195,015.22 × 41,247.12
  4. Step 4: Simplify right side
    129,990.72x = 8,043,816,181.17
  5. Step 5: Solve for x
    x = 8,043,816,181.17/129,990.72
  6. Step 6: Final answer
    x = 61,879.93

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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.