Home / 143,442.73-197,944.72-78,907.88

Finding the Fourth Proportional to 143,442.73, 197,944.72 and 78,907.88

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Solution

The fourth proportional to 143,442.73, 197,944.72 and 78,907.88 is: 108,889.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,442.73 : 197,944.72 = 78,907.88 : x
  2. Step 2: Convert to fraction form
    143,442.73/197,944.72 = 78,907.88/x
  3. Step 3: Cross multiply
    143,442.73x = 197,944.72 × 78,907.88
  4. Step 4: Simplify right side
    143,442.73x = 15,619,398,212.39
  5. Step 5: Solve for x
    x = 15,619,398,212.39/143,442.73
  6. Step 6: Final answer
    x = 108,889.44

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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.