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Finding the Fourth Proportional to 139,624.20, 192,675.87 and 75,960.63

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Solution

The fourth proportional to 139,624.20, 192,675.87 and 75,960.63 is: 104,822.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,624.20 : 192,675.87 = 75,960.63 : x
  2. Step 2: Convert to fraction form
    139,624.20/192,675.87 = 75,960.63/x
  3. Step 3: Cross multiply
    139,624.20x = 192,675.87 × 75,960.63
  4. Step 4: Simplify right side
    139,624.20x = 14,635,780,471.00
  5. Step 5: Solve for x
    x = 14,635,780,471.00/139,624.20
  6. Step 6: Final answer
    x = 104,822.66

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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.