Home / 212,105.11-318,169.41-69,944.65

Finding the Fourth Proportional to 212,105.11, 318,169.41 and 69,944.65

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Solution

The fourth proportional to 212,105.11, 318,169.41 and 69,944.65 is: 104,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,105.11 : 318,169.41 = 69,944.65 : x
  2. Step 2: Convert to fraction form
    212,105.11/318,169.41 = 69,944.65/x
  3. Step 3: Cross multiply
    212,105.11x = 318,169.41 × 69,944.65
  4. Step 4: Simplify right side
    212,105.11x = 22,254,248,023.16
  5. Step 5: Solve for x
    x = 22,254,248,023.16/212,105.11
  6. Step 6: Final answer
    x = 104,920.85

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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.