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Finding the Fourth Proportional to 135,682.39, 203,495.01 and 87,506.69

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Solution

The fourth proportional to 135,682.39, 203,495.01 and 87,506.69 is: 131,241.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,682.39 : 203,495.01 = 87,506.69 : x
  2. Step 2: Convert to fraction form
    135,682.39/203,495.01 = 87,506.69/x
  3. Step 3: Cross multiply
    135,682.39x = 203,495.01 × 87,506.69
  4. Step 4: Simplify right side
    135,682.39x = 17,807,174,935.56
  5. Step 5: Solve for x
    x = 17,807,174,935.56/135,682.39
  6. Step 6: Final answer
    x = 131,241.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.