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Finding the Fourth Proportional to 139,671.63, 192,751.22 and 79,244.82

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Solution

The fourth proportional to 139,671.63, 192,751.22 and 79,244.82 is: 109,360.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,671.63 : 192,751.22 = 79,244.82 : x
  2. Step 2: Convert to fraction form
    139,671.63/192,751.22 = 79,244.82/x
  3. Step 3: Cross multiply
    139,671.63x = 192,751.22 × 79,244.82
  4. Step 4: Simplify right side
    139,671.63x = 15,274,535,733.68
  5. Step 5: Solve for x
    x = 15,274,535,733.68/139,671.63
  6. Step 6: Final answer
    x = 109,360.33

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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.