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Finding the Fourth Proportional to 139,391.07, 192,363.44 and 75,733.17

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Solution

The fourth proportional to 139,391.07, 192,363.44 and 75,733.17 is: 104,513.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,391.07 : 192,363.44 = 75,733.17 : x
  2. Step 2: Convert to fraction form
    139,391.07/192,363.44 = 75,733.17/x
  3. Step 3: Cross multiply
    139,391.07x = 192,363.44 × 75,733.17
  4. Step 4: Simplify right side
    139,391.07x = 14,568,292,724.64
  5. Step 5: Solve for x
    x = 14,568,292,724.64/139,391.07
  6. Step 6: Final answer
    x = 104,513.82

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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.