Home / 143,276.00-197,711.25-78,743.84

Finding the Fourth Proportional to 143,276.00, 197,711.25 and 78,743.84

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Solution

The fourth proportional to 143,276.00, 197,711.25 and 78,743.84 is: 108,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,276.00 : 197,711.25 = 78,743.84 : x
  2. Step 2: Convert to fraction form
    143,276.00/197,711.25 = 78,743.84/x
  3. Step 3: Cross multiply
    143,276.00x = 197,711.25 × 78,743.84
  4. Step 4: Simplify right side
    143,276.00x = 15,568,542,047.64
  5. Step 5: Solve for x
    x = 15,568,542,047.64/143,276.00
  6. Step 6: Final answer
    x = 108,661.20

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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.