Home / 143,338.28-197,789.63-78,796.87

Finding the Fourth Proportional to 143,338.28, 197,789.63 and 78,796.87

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Solution

The fourth proportional to 143,338.28, 197,789.63 and 78,796.87 is: 108,730.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,338.28 : 197,789.63 = 78,796.87 : x
  2. Step 2: Convert to fraction form
    143,338.28/197,789.63 = 78,796.87/x
  3. Step 3: Cross multiply
    143,338.28x = 197,789.63 × 78,796.87
  4. Step 4: Simplify right side
    143,338.28x = 15,585,203,317.23
  5. Step 5: Solve for x
    x = 15,585,203,317.23/143,338.28
  6. Step 6: Final answer
    x = 108,730.23

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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.