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Finding the Fourth Proportional to 154,168.28, 231,068.34 and 79,324.28

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Solution

The fourth proportional to 154,168.28, 231,068.34 and 79,324.28 is: 118,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,168.28 : 231,068.34 = 79,324.28 : x
  2. Step 2: Convert to fraction form
    154,168.28/231,068.34 = 79,324.28/x
  3. Step 3: Cross multiply
    154,168.28x = 231,068.34 × 79,324.28
  4. Step 4: Simplify right side
    154,168.28x = 18,329,328,545.95
  5. Step 5: Solve for x
    x = 18,329,328,545.95/154,168.28
  6. Step 6: Final answer
    x = 118,891.70

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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.