Home / 80,112.15-120,171.06-27,521.28

Finding the Fourth Proportional to 80,112.15, 120,171.06 and 27,521.28

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Solution

The fourth proportional to 80,112.15, 120,171.06 and 27,521.28 is: 41,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,112.15 : 120,171.06 = 27,521.28 : x
  2. Step 2: Convert to fraction form
    80,112.15/120,171.06 = 27,521.28/x
  3. Step 3: Cross multiply
    80,112.15x = 120,171.06 × 27,521.28
  4. Step 4: Simplify right side
    80,112.15x = 3,307,261,390.16
  5. Step 5: Solve for x
    x = 3,307,261,390.16/80,112.15
  6. Step 6: Final answer
    x = 41,282.89

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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.