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Finding the Fourth Proportional to 120,076.29, 180,134.23 and 49,960.53

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Solution

The fourth proportional to 120,076.29, 180,134.23 and 49,960.53 is: 74,949.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,076.29 : 180,134.23 = 49,960.53 : x
  2. Step 2: Convert to fraction form
    120,076.29/180,134.23 = 49,960.53/x
  3. Step 3: Cross multiply
    120,076.29x = 180,134.23 × 49,960.53
  4. Step 4: Simplify right side
    120,076.29x = 8,999,601,601.94
  5. Step 5: Solve for x
    x = 8,999,601,601.94/120,076.29
  6. Step 6: Final answer
    x = 74,949.03

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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.