Home / 143,128.80-197,517.96-79,464.96

Finding the Fourth Proportional to 143,128.80, 197,517.96 and 79,464.96

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Solution

The fourth proportional to 143,128.80, 197,517.96 and 79,464.96 is: 109,661.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,128.80 : 197,517.96 = 79,464.96 : x
  2. Step 2: Convert to fraction form
    143,128.80/197,517.96 = 79,464.96/x
  3. Step 3: Cross multiply
    143,128.80x = 197,517.96 × 79,464.96
  4. Step 4: Simplify right side
    143,128.80x = 15,695,756,790.68
  5. Step 5: Solve for x
    x = 15,695,756,790.68/143,128.80
  6. Step 6: Final answer
    x = 109,661.76

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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.