Home / 143,338.78-197,790.32-78,797.37

Finding the Fourth Proportional to 143,338.78, 197,790.32 and 78,797.37

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Solution

The fourth proportional to 143,338.78, 197,790.32 and 78,797.37 is: 108,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,338.78 : 197,790.32 = 78,797.37 : x
  2. Step 2: Convert to fraction form
    143,338.78/197,790.32 = 78,797.37/x
  3. Step 3: Cross multiply
    143,338.78x = 197,790.32 × 78,797.37
  4. Step 4: Simplify right side
    143,338.78x = 15,585,357,027.46
  5. Step 5: Solve for x
    x = 15,585,357,027.46/143,338.78
  6. Step 6: Final answer
    x = 108,730.92

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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.