Home / 189,642.30-261,758.52-117,979.58

Finding the Fourth Proportional to 189,642.30, 261,758.52 and 117,979.58

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Solution

The fourth proportional to 189,642.30, 261,758.52 and 117,979.58 is: 162,844.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,642.30 : 261,758.52 = 117,979.58 : x
  2. Step 2: Convert to fraction form
    189,642.30/261,758.52 = 117,979.58/x
  3. Step 3: Cross multiply
    189,642.30x = 261,758.52 × 117,979.58
  4. Step 4: Simplify right side
    189,642.30x = 30,882,160,251.02
  5. Step 5: Solve for x
    x = 30,882,160,251.02/189,642.30
  6. Step 6: Final answer
    x = 162,844.26

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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.