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Finding the Fourth Proportional to 179,661.60, 269,589.60 and 74,491.20

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Solution

The fourth proportional to 179,661.60, 269,589.60 and 74,491.20 is: 111,777.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,661.60 : 269,589.60 = 74,491.20 : x
  2. Step 2: Convert to fraction form
    179,661.60/269,589.60 = 74,491.20/x
  3. Step 3: Cross multiply
    179,661.60x = 269,589.60 × 74,491.20
  4. Step 4: Simplify right side
    179,661.60x = 20,082,052,811.52
  5. Step 5: Solve for x
    x = 20,082,052,811.52/179,661.60
  6. Step 6: Final answer
    x = 111,777.10

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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.