Home / 143,199.24-197,615-79,542.96

Finding the Fourth Proportional to 143,199.24, 197,615 and 79,542.96

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Solution

The fourth proportional to 143,199.24, 197,615 and 79,542.96 is: 109,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,199.24 : 197,615 = 79,542.96 : x
  2. Step 2: Convert to fraction form
    143,199.24/197,615 = 79,542.96/x
  3. Step 3: Cross multiply
    143,199.24x = 197,615 × 79,542.96
  4. Step 4: Simplify right side
    143,199.24x = 15,718,882,040.40
  5. Step 5: Solve for x
    x = 15,718,882,040.40/143,199.24
  6. Step 6: Final answer
    x = 109,769.31

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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.