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Finding the Fourth Proportional to 139,555.44, 192,584.52 and 75,893.76

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Solution

The fourth proportional to 139,555.44, 192,584.52 and 75,893.76 is: 104,732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,555.44 : 192,584.52 = 75,893.76 : x
  2. Step 2: Convert to fraction form
    139,555.44/192,584.52 = 75,893.76/x
  3. Step 3: Cross multiply
    139,555.44x = 192,584.52 × 75,893.76
  4. Step 4: Simplify right side
    139,555.44x = 14,615,963,340.60
  5. Step 5: Solve for x
    x = 14,615,963,340.60/139,555.44
  6. Step 6: Final answer
    x = 104,732.31

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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.