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Finding the Fourth Proportional to 135,687.62, 187,260.39 and 75,277.69

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Solution

The fourth proportional to 135,687.62, 187,260.39 and 75,277.69 is: 103,889.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,687.62 : 187,260.39 = 75,277.69 : x
  2. Step 2: Convert to fraction form
    135,687.62/187,260.39 = 75,277.69/x
  3. Step 3: Cross multiply
    135,687.62x = 187,260.39 × 75,277.69
  4. Step 4: Simplify right side
    135,687.62x = 14,096,529,119.55
  5. Step 5: Solve for x
    x = 14,096,529,119.55/135,687.62
  6. Step 6: Final answer
    x = 103,889.57

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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.