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Finding the Fourth Proportional to 139,671.16, 192,750.57 and 79,244.35

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Solution

The fourth proportional to 139,671.16, 192,750.57 and 79,244.35 is: 109,359.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,671.16 : 192,750.57 = 79,244.35 : x
  2. Step 2: Convert to fraction form
    139,671.16/192,750.57 = 79,244.35/x
  3. Step 3: Cross multiply
    139,671.16x = 192,750.57 × 79,244.35
  4. Step 4: Simplify right side
    139,671.16x = 15,274,393,149.90
  5. Step 5: Solve for x
    x = 15,274,393,149.90/139,671.16
  6. Step 6: Final answer
    x = 109,359.68

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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.