Home / 143,020.94-197,373.36-79,364.66

Finding the Fourth Proportional to 143,020.94, 197,373.36 and 79,364.66

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Solution

The fourth proportional to 143,020.94, 197,373.36 and 79,364.66 is: 109,525.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,020.94 : 197,373.36 = 79,364.66 : x
  2. Step 2: Convert to fraction form
    143,020.94/197,373.36 = 79,364.66/x
  3. Step 3: Cross multiply
    143,020.94x = 197,373.36 × 79,364.66
  4. Step 4: Simplify right side
    143,020.94x = 15,664,469,609.46
  5. Step 5: Solve for x
    x = 15,664,469,609.46/143,020.94
  6. Step 6: Final answer
    x = 109,525.71

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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.