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Finding the Fourth Proportional to 179,814.80, 270,013.80 and 120,911.60

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Solution

The fourth proportional to 179,814.80, 270,013.80 and 120,911.60 is: 181,563.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,814.80 : 270,013.80 = 120,911.60 : x
  2. Step 2: Convert to fraction form
    179,814.80/270,013.80 = 120,911.60/x
  3. Step 3: Cross multiply
    179,814.80x = 270,013.80 × 120,911.60
  4. Step 4: Simplify right side
    179,814.80x = 32,647,800,580.08
  5. Step 5: Solve for x
    x = 32,647,800,580.08/179,814.80
  6. Step 6: Final answer
    x = 181,563.48

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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.