Home / 80,129.40-120,196.94-27,538.53

Finding the Fourth Proportional to 80,129.40, 120,196.94 and 27,538.53

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Solution

The fourth proportional to 80,129.40, 120,196.94 and 27,538.53 is: 41,308.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,129.40 : 120,196.94 = 27,538.53 : x
  2. Step 2: Convert to fraction form
    80,129.40/120,196.94 = 27,538.53/x
  3. Step 3: Cross multiply
    80,129.40x = 120,196.94 × 27,538.53
  4. Step 4: Simplify right side
    80,129.40x = 3,310,046,900.41
  5. Step 5: Solve for x
    x = 3,310,046,900.41/80,129.40
  6. Step 6: Final answer
    x = 41,308.77

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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.