Home / 212,767.20-318,879.45-112,975.20

Finding the Fourth Proportional to 212,767.20, 318,879.45 and 112,975.20

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Solution

The fourth proportional to 212,767.20, 318,879.45 and 112,975.20 is: 169,318.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,767.20 : 318,879.45 = 112,975.20 : x
  2. Step 2: Convert to fraction form
    212,767.20/318,879.45 = 112,975.20/x
  3. Step 3: Cross multiply
    212,767.20x = 318,879.45 × 112,975.20
  4. Step 4: Simplify right side
    212,767.20x = 36,025,469,639.64
  5. Step 5: Solve for x
    x = 36,025,469,639.64/212,767.20
  6. Step 6: Final answer
    x = 169,318.72

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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.