Home / 143,409.42-197,896.84-79,745.85

Finding the Fourth Proportional to 143,409.42, 197,896.84 and 79,745.85

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Solution

The fourth proportional to 143,409.42, 197,896.84 and 79,745.85 is: 110,044.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,409.42 : 197,896.84 = 79,745.85 : x
  2. Step 2: Convert to fraction form
    143,409.42/197,896.84 = 79,745.85/x
  3. Step 3: Cross multiply
    143,409.42x = 197,896.84 × 79,745.85
  4. Step 4: Simplify right side
    143,409.42x = 15,781,451,518.75
  5. Step 5: Solve for x
    x = 15,781,451,518.75/143,409.42
  6. Step 6: Final answer
    x = 110,044.73

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1.5x scale

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.