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Finding the Fourth Proportional to 135,161.82, 186,520.41 and 74,735.01

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Solution

The fourth proportional to 135,161.82, 186,520.41 and 74,735.01 is: 103,132.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,161.82 : 186,520.41 = 74,735.01 : x
  2. Step 2: Convert to fraction form
    135,161.82/186,520.41 = 74,735.01/x
  3. Step 3: Cross multiply
    135,161.82x = 186,520.41 × 74,735.01
  4. Step 4: Simplify right side
    135,161.82x = 13,939,604,706.55
  5. Step 5: Solve for x
    x = 13,939,604,706.55/135,161.82
  6. Step 6: Final answer
    x = 103,132.71

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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.