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Finding the Fourth Proportional to 120,687.72, 181,043.90 and 41,801.80

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Solution

The fourth proportional to 120,687.72, 181,043.90 and 41,801.80 is: 62,706.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,687.72 : 181,043.90 = 41,801.80 : x
  2. Step 2: Convert to fraction form
    120,687.72/181,043.90 = 41,801.80/x
  3. Step 3: Cross multiply
    120,687.72x = 181,043.90 × 41,801.80
  4. Step 4: Simplify right side
    120,687.72x = 7,567,960,899.02
  5. Step 5: Solve for x
    x = 7,567,960,899.02/120,687.72
  6. Step 6: Final answer
    x = 62,706.97

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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.