Home / 197,198.72-272,189.94-116,654.21

Finding the Fourth Proportional to 197,198.72, 272,189.94 and 116,654.21

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Solution

The fourth proportional to 197,198.72, 272,189.94 and 116,654.21 is: 161,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,198.72 : 272,189.94 = 116,654.21 : x
  2. Step 2: Convert to fraction form
    197,198.72/272,189.94 = 116,654.21/x
  3. Step 3: Cross multiply
    197,198.72x = 272,189.94 × 116,654.21
  4. Step 4: Simplify right side
    197,198.72x = 31,752,102,420.65
  5. Step 5: Solve for x
    x = 31,752,102,420.65/197,198.72
  6. Step 6: Final answer
    x = 161,015.76

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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.