Home / 205,520.13-283,619.75-120,638.61

Finding the Fourth Proportional to 205,520.13, 283,619.75 and 120,638.61

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Solution

The fourth proportional to 205,520.13, 283,619.75 and 120,638.61 is: 166,482.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,520.13 : 283,619.75 = 120,638.61 : x
  2. Step 2: Convert to fraction form
    205,520.13/283,619.75 = 120,638.61/x
  3. Step 3: Cross multiply
    205,520.13x = 283,619.75 × 120,638.61
  4. Step 4: Simplify right side
    205,520.13x = 34,215,491,805.35
  5. Step 5: Solve for x
    x = 34,215,491,805.35/205,520.13
  6. Step 6: Final answer
    x = 166,482.44

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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.