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Finding the Fourth Proportional to 139,369.58, 192,330.36 and 75,706.04

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Solution

The fourth proportional to 139,369.58, 192,330.36 and 75,706.04 is: 104,474.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,369.58 : 192,330.36 = 75,706.04 : x
  2. Step 2: Convert to fraction form
    139,369.58/192,330.36 = 75,706.04/x
  3. Step 3: Cross multiply
    139,369.58x = 192,330.36 × 75,706.04
  4. Step 4: Simplify right side
    139,369.58x = 14,560,569,927.37
  5. Step 5: Solve for x
    x = 14,560,569,927.37/139,369.58
  6. Step 6: Final answer
    x = 104,474.52

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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.