Home / 80,143.37-120,221.31-26,835.55

Finding the Fourth Proportional to 80,143.37, 120,221.31 and 26,835.55

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Solution

The fourth proportional to 80,143.37, 120,221.31 and 26,835.55 is: 40,255.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,143.37 : 120,221.31 = 26,835.55 : x
  2. Step 2: Convert to fraction form
    80,143.37/120,221.31 = 26,835.55/x
  3. Step 3: Cross multiply
    80,143.37x = 120,221.31 × 26,835.55
  4. Step 4: Simplify right side
    80,143.37x = 3,226,205,451.90
  5. Step 5: Solve for x
    x = 3,226,205,451.90/80,143.37
  6. Step 6: Final answer
    x = 40,255.42

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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.