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Finding the Fourth Proportional to 139,525.82, 192,544.64 and 75,863.66

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Solution

The fourth proportional to 139,525.82, 192,544.64 and 75,863.66 is: 104,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,525.82 : 192,544.64 = 75,863.66 : x
  2. Step 2: Convert to fraction form
    139,525.82/192,544.64 = 75,863.66/x
  3. Step 3: Cross multiply
    139,525.82x = 192,544.64 × 75,863.66
  4. Step 4: Simplify right side
    139,525.82x = 14,607,141,103.78
  5. Step 5: Solve for x
    x = 14,607,141,103.78/139,525.82
  6. Step 6: Final answer
    x = 104,691.31

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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.