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Finding the Fourth Proportional to 139,245.70, 192,160.03 and 75,583.48

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Solution

The fourth proportional to 139,245.70, 192,160.03 and 75,583.48 is: 104,305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,245.70 : 192,160.03 = 75,583.48 : x
  2. Step 2: Convert to fraction form
    139,245.70/192,160.03 = 75,583.48/x
  3. Step 3: Cross multiply
    139,245.70x = 192,160.03 × 75,583.48
  4. Step 4: Simplify right side
    139,245.70x = 14,524,123,784.30
  5. Step 5: Solve for x
    x = 14,524,123,784.30/139,245.70
  6. Step 6: Final answer
    x = 104,305.73

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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.