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Finding the Fourth Proportional to 139,238.92, 192,149.92 and 75,576.77

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Solution

The fourth proportional to 139,238.92, 192,149.92 and 75,576.77 is: 104,296.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,238.92 : 192,149.92 = 75,576.77 : x
  2. Step 2: Convert to fraction form
    139,238.92/192,149.92 = 75,576.77/x
  3. Step 3: Cross multiply
    139,238.92x = 192,149.92 × 75,576.77
  4. Step 4: Simplify right side
    139,238.92x = 14,522,070,309.36
  5. Step 5: Solve for x
    x = 14,522,070,309.36/139,238.92
  6. Step 6: Final answer
    x = 104,296.06

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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.