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Finding the Fourth Proportional to 139,334.73, 192,281.09 and 75,671.97

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Solution

The fourth proportional to 139,334.73, 192,281.09 and 75,671.97 is: 104,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,334.73 : 192,281.09 = 75,671.97 : x
  2. Step 2: Convert to fraction form
    139,334.73/192,281.09 = 75,671.97/x
  3. Step 3: Cross multiply
    139,334.73x = 192,281.09 × 75,671.97
  4. Step 4: Simplify right side
    139,334.73x = 14,550,288,495.69
  5. Step 5: Solve for x
    x = 14,550,288,495.69/139,334.73
  6. Step 6: Final answer
    x = 104,426.86

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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.