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Finding the Fourth Proportional to 120,738.67, 181,108.01 and 45,858.63

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Solution

The fourth proportional to 120,738.67, 181,108.01 and 45,858.63 is: 68,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,738.67 : 181,108.01 = 45,858.63 : x
  2. Step 2: Convert to fraction form
    120,738.67/181,108.01 = 45,858.63/x
  3. Step 3: Cross multiply
    120,738.67x = 181,108.01 × 45,858.63
  4. Step 4: Simplify right side
    120,738.67x = 8,305,365,584.01
  5. Step 5: Solve for x
    x = 8,305,365,584.01/120,738.67
  6. Step 6: Final answer
    x = 68,787.95

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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.