Home / 120,537.06-180,835.71-85,067.61

Finding the Fourth Proportional to 120,537.06, 180,835.71 and 85,067.61

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Solution

The fourth proportional to 120,537.06, 180,835.71 and 85,067.61 is: 127,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,537.06 : 180,835.71 = 85,067.61 : x
  2. Step 2: Convert to fraction form
    120,537.06/180,835.71 = 85,067.61/x
  3. Step 3: Cross multiply
    120,537.06x = 180,835.71 × 85,067.61
  4. Step 4: Simplify right side
    120,537.06x = 15,383,260,655.22
  5. Step 5: Solve for x
    x = 15,383,260,655.22/120,537.06
  6. Step 6: Final answer
    x = 127,622.67

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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.