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Finding the Fourth Proportional to 139,367.58, 192,327.60 and 75,704.04

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Solution

The fourth proportional to 139,367.58, 192,327.60 and 75,704.04 is: 104,471.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,367.58 : 192,327.60 = 75,704.04 : x
  2. Step 2: Convert to fraction form
    139,367.58/192,327.60 = 75,704.04/x
  3. Step 3: Cross multiply
    139,367.58x = 192,327.60 × 75,704.04
  4. Step 4: Simplify right side
    139,367.58x = 14,559,976,323.50
  5. Step 5: Solve for x
    x = 14,559,976,323.50/139,367.58
  6. Step 6: Final answer
    x = 104,471.76

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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.