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Finding the Fourth Proportional to 139,517.80, 192,529.30 and 75,853.40

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Solution

The fourth proportional to 139,517.80, 192,529.30 and 75,853.40 is: 104,674.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,517.80 : 192,529.30 = 75,853.40 : x
  2. Step 2: Convert to fraction form
    139,517.80/192,529.30 = 75,853.40/x
  3. Step 3: Cross multiply
    139,517.80x = 192,529.30 × 75,853.40
  4. Step 4: Simplify right side
    139,517.80x = 14,604,002,004.62
  5. Step 5: Solve for x
    x = 14,604,002,004.62/139,517.80
  6. Step 6: Final answer
    x = 104,674.83

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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.