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Finding the Fourth Proportional to 139,265.46, 192,185.28 and 75,601.98

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Solution

The fourth proportional to 139,265.46, 192,185.28 and 75,601.98 is: 104,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,265.46 : 192,185.28 = 75,601.98 : x
  2. Step 2: Convert to fraction form
    139,265.46/192,185.28 = 75,601.98/x
  3. Step 3: Cross multiply
    139,265.46x = 192,185.28 × 75,601.98
  4. Step 4: Simplify right side
    139,265.46x = 14,529,587,694.85
  5. Step 5: Solve for x
    x = 14,529,587,694.85/139,265.46
  6. Step 6: Final answer
    x = 104,330.16

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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.