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Finding the Fourth Proportional to 179,585.86, 269,380.12 and 79,719.20

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Solution

The fourth proportional to 179,585.86, 269,380.12 and 79,719.20 is: 119,579.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,585.86 : 269,380.12 = 79,719.20 : x
  2. Step 2: Convert to fraction form
    179,585.86/269,380.12 = 79,719.20/x
  3. Step 3: Cross multiply
    179,585.86x = 269,380.12 × 79,719.20
  4. Step 4: Simplify right side
    179,585.86x = 21,474,767,662.30
  5. Step 5: Solve for x
    x = 21,474,767,662.30/179,585.86
  6. Step 6: Final answer
    x = 119,579.39

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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.