Home / 80,178.72-120,266.79-27,588.66

Finding the Fourth Proportional to 80,178.72, 120,266.79 and 27,588.66

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Solution

The fourth proportional to 80,178.72, 120,266.79 and 27,588.66 is: 41,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,178.72 : 120,266.79 = 27,588.66 : x
  2. Step 2: Convert to fraction form
    80,178.72/120,266.79 = 27,588.66/x
  3. Step 3: Cross multiply
    80,178.72x = 120,266.79 × 27,588.66
  4. Step 4: Simplify right side
    80,178.72x = 3,317,999,578.60
  5. Step 5: Solve for x
    x = 3,317,999,578.60/80,178.72
  6. Step 6: Final answer
    x = 41,382.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.