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Finding the Fourth Proportional to 139,671.58, 192,751.16 and 79,244.77

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Solution

The fourth proportional to 139,671.58, 192,751.16 and 79,244.77 is: 109,360.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,671.58 : 192,751.16 = 79,244.77 : x
  2. Step 2: Convert to fraction form
    139,671.58/192,751.16 = 79,244.77/x
  3. Step 3: Cross multiply
    139,671.58x = 192,751.16 × 79,244.77
  4. Step 4: Simplify right side
    139,671.58x = 15,274,520,824.74
  5. Step 5: Solve for x
    x = 15,274,520,824.74/139,671.58
  6. Step 6: Final answer
    x = 109,360.26

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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.