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Finding the Fourth Proportional to 143,458.62, 197,972.31 and 79,796.41

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Solution

The fourth proportional to 143,458.62, 197,972.31 and 79,796.41 is: 110,118.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,458.62 : 197,972.31 = 79,796.41 : x
  2. Step 2: Convert to fraction form
    143,458.62/197,972.31 = 79,796.41/x
  3. Step 3: Cross multiply
    143,458.62x = 197,972.31 × 79,796.41
  4. Step 4: Simplify right side
    143,458.62x = 15,797,479,617.41
  5. Step 5: Solve for x
    x = 15,797,479,617.41/143,458.62
  6. Step 6: Final answer
    x = 110,118.72

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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.