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Finding the Fourth Proportional to 139,296.70, 192,224.05 and 75,633.04

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Solution

The fourth proportional to 139,296.70, 192,224.05 and 75,633.04 is: 104,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,296.70 : 192,224.05 = 75,633.04 : x
  2. Step 2: Convert to fraction form
    139,296.70/192,224.05 = 75,633.04/x
  3. Step 3: Cross multiply
    139,296.70x = 192,224.05 × 75,633.04
  4. Step 4: Simplify right side
    139,296.70x = 14,538,489,262.61
  5. Step 5: Solve for x
    x = 14,538,489,262.61/139,296.70
  6. Step 6: Final answer
    x = 104,370.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.