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Finding the Fourth Proportional to 139,671.74, 192,751.37 and 79,244.93

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Solution

The fourth proportional to 139,671.74, 192,751.37 and 79,244.93 is: 109,360.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,671.74 : 192,751.37 = 79,244.93 : x
  2. Step 2: Convert to fraction form
    139,671.74/192,751.37 = 79,244.93/x
  3. Step 3: Cross multiply
    139,671.74x = 192,751.37 × 79,244.93
  4. Step 4: Simplify right side
    139,671.74x = 15,274,568,823.05
  5. Step 5: Solve for x
    x = 15,274,568,823.05/139,671.74
  6. Step 6: Final answer
    x = 109,360.48

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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.