Home / 143,391.10-197,879.07-79,725.10

Finding the Fourth Proportional to 143,391.10, 197,879.07 and 79,725.10

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Solution

The fourth proportional to 143,391.10, 197,879.07 and 79,725.10 is: 110,020.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,391.10 : 197,879.07 = 79,725.10 : x
  2. Step 2: Convert to fraction form
    143,391.10/197,879.07 = 79,725.10/x
  3. Step 3: Cross multiply
    143,391.10x = 197,879.07 × 79,725.10
  4. Step 4: Simplify right side
    143,391.10x = 15,775,928,643.66
  5. Step 5: Solve for x
    x = 15,775,928,643.66/143,391.10
  6. Step 6: Final answer
    x = 110,020.28

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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.