Home / 120,132.10-180,287.91-45,326.02

Finding the Fourth Proportional to 120,132.10, 180,287.91 and 45,326.02

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Solution

The fourth proportional to 120,132.10, 180,287.91 and 45,326.02 is: 68,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132.10 : 180,287.91 = 45,326.02 : x
  2. Step 2: Convert to fraction form
    120,132.10/180,287.91 = 45,326.02/x
  3. Step 3: Cross multiply
    120,132.10x = 180,287.91 × 45,326.02
  4. Step 4: Simplify right side
    120,132.10x = 8,171,733,414.42
  5. Step 5: Solve for x
    x = 8,171,733,414.42/120,132.10
  6. Step 6: Final answer
    x = 68,022.90

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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.