Home / 211,081.08-291,291.72-115,589.64

Finding the Fourth Proportional to 211,081.08, 291,291.72 and 115,589.64

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Solution

The fourth proportional to 211,081.08, 291,291.72 and 115,589.64 is: 159,513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,081.08 : 291,291.72 = 115,589.64 : x
  2. Step 2: Convert to fraction form
    211,081.08/291,291.72 = 115,589.64/x
  3. Step 3: Cross multiply
    211,081.08x = 291,291.72 × 115,589.64
  4. Step 4: Simplify right side
    211,081.08x = 33,670,305,049.78
  5. Step 5: Solve for x
    x = 33,670,305,049.78/211,081.08
  6. Step 6: Final answer
    x = 159,513.61

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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.