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Finding the Fourth Proportional to 178,419, 267,732.18 and 79,923

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Solution

The fourth proportional to 178,419, 267,732.18 and 79,923 is: 119,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,419 : 267,732.18 = 79,923 : x
  2. Step 2: Convert to fraction form
    178,419/267,732.18 = 79,923/x
  3. Step 3: Cross multiply
    178,419x = 267,732.18 × 79,923
  4. Step 4: Simplify right side
    178,419x = 21,397,959,022.14
  5. Step 5: Solve for x
    x = 21,397,959,022.14/178,419
  6. Step 6: Final answer
    x = 119,930.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.