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Finding the Fourth Proportional to 139,601.22, 192,619.26 and 79,158.24

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Solution

The fourth proportional to 139,601.22, 192,619.26 and 79,158.24 is: 109,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,601.22 : 192,619.26 = 79,158.24 : x
  2. Step 2: Convert to fraction form
    139,601.22/192,619.26 = 79,158.24/x
  3. Step 3: Cross multiply
    139,601.22x = 192,619.26 × 79,158.24
  4. Step 4: Simplify right side
    139,601.22x = 15,247,401,611.70
  5. Step 5: Solve for x
    x = 15,247,401,611.70/139,601.22
  6. Step 6: Final answer
    x = 109,221.12

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1.5x scale

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.