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Finding the Fourth Proportional to 139,591.56, 192,670.57 and 79,197.56

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Solution

The fourth proportional to 139,591.56, 192,670.57 and 79,197.56 is: 109,312.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,591.56 : 192,670.57 = 79,197.56 : x
  2. Step 2: Convert to fraction form
    139,591.56/192,670.57 = 79,197.56/x
  3. Step 3: Cross multiply
    139,591.56x = 192,670.57 × 79,197.56
  4. Step 4: Simplify right side
    139,591.56x = 15,259,037,668.47
  5. Step 5: Solve for x
    x = 15,259,037,668.47/139,591.56
  6. Step 6: Final answer
    x = 109,312.04

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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.