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Finding the Fourth Proportional to 120,429.90, 180,601.22 and 40,443.94

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Solution

The fourth proportional to 120,429.90, 180,601.22 and 40,443.94 is: 60,651.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,429.90 : 180,601.22 = 40,443.94 : x
  2. Step 2: Convert to fraction form
    120,429.90/180,601.22 = 40,443.94/x
  3. Step 3: Cross multiply
    120,429.90x = 180,601.22 × 40,443.94
  4. Step 4: Simplify right side
    120,429.90x = 7,304,224,905.61
  5. Step 5: Solve for x
    x = 7,304,224,905.61/120,429.90
  6. Step 6: Final answer
    x = 60,651.26

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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.