Home / 211,028.30-291,226.92-120,399.02

Finding the Fourth Proportional to 211,028.30, 291,226.92 and 120,399.02

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Solution

The fourth proportional to 211,028.30, 291,226.92 and 120,399.02 is: 166,155.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,028.30 : 291,226.92 = 120,399.02 : x
  2. Step 2: Convert to fraction form
    211,028.30/291,226.92 = 120,399.02/x
  3. Step 3: Cross multiply
    211,028.30x = 291,226.92 × 120,399.02
  4. Step 4: Simplify right side
    211,028.30x = 35,063,435,765.62
  5. Step 5: Solve for x
    x = 35,063,435,765.62/211,028.30
  6. Step 6: Final answer
    x = 166,155.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.