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Finding the Fourth Proportional to 139,286.52, 192,216.78 and 75,624.84

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Solution

The fourth proportional to 139,286.52, 192,216.78 and 75,624.84 is: 104,363.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,286.52 : 192,216.78 = 75,624.84 : x
  2. Step 2: Convert to fraction form
    139,286.52/192,216.78 = 75,624.84/x
  3. Step 3: Cross multiply
    139,286.52x = 192,216.78 × 75,624.84
  4. Step 4: Simplify right side
    139,286.52x = 14,536,363,232.82
  5. Step 5: Solve for x
    x = 14,536,363,232.82/139,286.52
  6. Step 6: Final answer
    x = 104,363.03

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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.