Home / 138,466.20-208,132.82-91,383.85

Finding the Fourth Proportional to 138,466.20, 208,132.82 and 91,383.85

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Solution

The fourth proportional to 138,466.20, 208,132.82 and 91,383.85 is: 137,361.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,466.20 : 208,132.82 = 91,383.85 : x
  2. Step 2: Convert to fraction form
    138,466.20/208,132.82 = 91,383.85/x
  3. Step 3: Cross multiply
    138,466.20x = 208,132.82 × 91,383.85
  4. Step 4: Simplify right side
    138,466.20x = 19,019,978,631.42
  5. Step 5: Solve for x
    x = 19,019,978,631.42/138,466.20
  6. Step 6: Final answer
    x = 137,361.89

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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.