Home / 143,214.75-197,636.49-79,558.47

Finding the Fourth Proportional to 143,214.75, 197,636.49 and 79,558.47

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Solution

The fourth proportional to 143,214.75, 197,636.49 and 79,558.47 is: 109,790.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,214.75 : 197,636.49 = 79,558.47 : x
  2. Step 2: Convert to fraction form
    143,214.75/197,636.49 = 79,558.47/x
  3. Step 3: Cross multiply
    143,214.75x = 197,636.49 × 79,558.47
  4. Step 4: Simplify right side
    143,214.75x = 15,723,656,760.57
  5. Step 5: Solve for x
    x = 15,723,656,760.57/143,214.75
  6. Step 6: Final answer
    x = 109,790.76

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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.