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Finding the Fourth Proportional to 120,661.71, 181,018.58 and 36,414.83

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Solution

The fourth proportional to 120,661.71, 181,018.58 and 36,414.83 is: 54,630.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,661.71 : 181,018.58 = 36,414.83 : x
  2. Step 2: Convert to fraction form
    120,661.71/181,018.58 = 36,414.83/x
  3. Step 3: Cross multiply
    120,661.71x = 181,018.58 × 36,414.83
  4. Step 4: Simplify right side
    120,661.71x = 6,591,760,817.54
  5. Step 5: Solve for x
    x = 6,591,760,817.54/120,661.71
  6. Step 6: Final answer
    x = 54,630.10

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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.