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Finding the Fourth Proportional to 139,516.92, 192,535.25 and 75,854.57

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Solution

The fourth proportional to 139,516.92, 192,535.25 and 75,854.57 is: 104,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,516.92 : 192,535.25 = 75,854.57 : x
  2. Step 2: Convert to fraction form
    139,516.92/192,535.25 = 75,854.57/x
  3. Step 3: Cross multiply
    139,516.92x = 192,535.25 × 75,854.57
  4. Step 4: Simplify right side
    139,516.92x = 14,604,677,256.64
  5. Step 5: Solve for x
    x = 14,604,677,256.64/139,516.92
  6. Step 6: Final answer
    x = 104,680.33

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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.