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Finding the Fourth Proportional to 80,131.39, 120,203.41 and 26,823.67

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Solution

The fourth proportional to 80,131.39, 120,203.41 and 26,823.67 is: 40,237.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,131.39 : 120,203.41 = 26,823.67 : x
  2. Step 2: Convert to fraction form
    80,131.39/120,203.41 = 26,823.67/x
  3. Step 3: Cross multiply
    80,131.39x = 120,203.41 × 26,823.67
  4. Step 4: Simplify right side
    80,131.39x = 3,224,296,961.59
  5. Step 5: Solve for x
    x = 3,224,296,961.59/80,131.39
  6. Step 6: Final answer
    x = 40,237.63

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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.