Home / 120,568.46-180,845.39-53,990.71

Finding the Fourth Proportional to 120,568.46, 180,845.39 and 53,990.71

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Solution

The fourth proportional to 120,568.46, 180,845.39 and 53,990.71 is: 80,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,568.46 : 180,845.39 = 53,990.71 : x
  2. Step 2: Convert to fraction form
    120,568.46/180,845.39 = 53,990.71/x
  3. Step 3: Cross multiply
    120,568.46x = 180,845.39 × 53,990.71
  4. Step 4: Simplify right side
    120,568.46x = 9,763,970,689.19
  5. Step 5: Solve for x
    x = 9,763,970,689.19/120,568.46
  6. Step 6: Final answer
    x = 80,982.80

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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.