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Finding the Fourth Proportional to 135,963.46, 187,629.41 and 75,539.69

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Solution

The fourth proportional to 135,963.46, 187,629.41 and 75,539.69 is: 104,244.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,963.46 : 187,629.41 = 75,539.69 : x
  2. Step 2: Convert to fraction form
    135,963.46/187,629.41 = 75,539.69/x
  3. Step 3: Cross multiply
    135,963.46x = 187,629.41 × 75,539.69
  4. Step 4: Simplify right side
    135,963.46x = 14,173,467,420.60
  5. Step 5: Solve for x
    x = 14,173,467,420.60/135,963.46
  6. Step 6: Final answer
    x = 104,244.68

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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.