Home / 143,436.45-197,939.49-79,772.88

Finding the Fourth Proportional to 143,436.45, 197,939.49 and 79,772.88

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Solution

The fourth proportional to 143,436.45, 197,939.49 and 79,772.88 is: 110,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,436.45 : 197,939.49 = 79,772.88 : x
  2. Step 2: Convert to fraction form
    143,436.45/197,939.49 = 79,772.88/x
  3. Step 3: Cross multiply
    143,436.45x = 197,939.49 × 79,772.88
  4. Step 4: Simplify right side
    143,436.45x = 15,790,203,183.03
  5. Step 5: Solve for x
    x = 15,790,203,183.03/143,436.45
  6. Step 6: Final answer
    x = 110,085.01

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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.