Home / 205,917.12-284,171.90-115,272.72

Finding the Fourth Proportional to 205,917.12, 284,171.90 and 115,272.72

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Solution

The fourth proportional to 205,917.12, 284,171.90 and 115,272.72 is: 159,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,917.12 : 284,171.90 = 115,272.72 : x
  2. Step 2: Convert to fraction form
    205,917.12/284,171.90 = 115,272.72/x
  3. Step 3: Cross multiply
    205,917.12x = 284,171.90 × 115,272.72
  4. Step 4: Simplify right side
    205,917.12x = 32,757,267,284.20
  5. Step 5: Solve for x
    x = 32,757,267,284.20/205,917.12
  6. Step 6: Final answer
    x = 159,079.86

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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.