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Finding the Fourth Proportional to 139,394.82, 192,360.93 and 75,732.77

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Solution

The fourth proportional to 139,394.82, 192,360.93 and 75,732.77 is: 104,509.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,394.82 : 192,360.93 = 75,732.77 : x
  2. Step 2: Convert to fraction form
    139,394.82/192,360.93 = 75,732.77/x
  3. Step 3: Cross multiply
    139,394.82x = 192,360.93 × 75,732.77
  4. Step 4: Simplify right side
    139,394.82x = 14,568,026,265.58
  5. Step 5: Solve for x
    x = 14,568,026,265.58/139,394.82
  6. Step 6: Final answer
    x = 104,509.09

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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.