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Finding the Fourth Proportional to 139,797.56, 192,922.79 and 76,135.37

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Solution

The fourth proportional to 139,797.56, 192,922.79 and 76,135.37 is: 105,067.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,797.56 : 192,922.79 = 76,135.37 : x
  2. Step 2: Convert to fraction form
    139,797.56/192,922.79 = 76,135.37/x
  3. Step 3: Cross multiply
    139,797.56x = 192,922.79 × 76,135.37
  4. Step 4: Simplify right side
    139,797.56x = 14,688,246,652.79
  5. Step 5: Solve for x
    x = 14,688,246,652.79/139,797.56
  6. Step 6: Final answer
    x = 105,067.97

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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.