Home / 205,186.72-283,158.84-120,305.20

Finding the Fourth Proportional to 205,186.72, 283,158.84 and 120,305.20

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Solution

The fourth proportional to 205,186.72, 283,158.84 and 120,305.20 is: 166,021.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,186.72 : 283,158.84 = 120,305.20 : x
  2. Step 2: Convert to fraction form
    205,186.72/283,158.84 = 120,305.20/x
  3. Step 3: Cross multiply
    205,186.72x = 283,158.84 × 120,305.20
  4. Step 4: Simplify right side
    205,186.72x = 34,065,480,877.97
  5. Step 5: Solve for x
    x = 34,065,480,877.97/205,186.72
  6. Step 6: Final answer
    x = 166,021.86

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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.