Home / 143,471.24-197,991.82-78,941.32

Finding the Fourth Proportional to 143,471.24, 197,991.82 and 78,941.32

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Solution

The fourth proportional to 143,471.24, 197,991.82 and 78,941.32 is: 108,939.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,471.24 : 197,991.82 = 78,941.32 : x
  2. Step 2: Convert to fraction form
    143,471.24/197,991.82 = 78,941.32/x
  3. Step 3: Cross multiply
    143,471.24x = 197,991.82 × 78,941.32
  4. Step 4: Simplify right side
    143,471.24x = 15,629,735,620.00
  5. Step 5: Solve for x
    x = 15,629,735,620.00/143,471.24
  6. Step 6: Final answer
    x = 108,939.85

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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.