Home / 143,911.56-198,601.13-79,382.76

Finding the Fourth Proportional to 143,911.56, 198,601.13 and 79,382.76

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Solution

The fourth proportional to 143,911.56, 198,601.13 and 79,382.76 is: 109,549.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,911.56 : 198,601.13 = 79,382.76 : x
  2. Step 2: Convert to fraction form
    143,911.56/198,601.13 = 79,382.76/x
  3. Step 3: Cross multiply
    143,911.56x = 198,601.13 × 79,382.76
  4. Step 4: Simplify right side
    143,911.56x = 15,765,504,647.06
  5. Step 5: Solve for x
    x = 15,765,504,647.06/143,911.56
  6. Step 6: Final answer
    x = 109,549.95

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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.