Home / 133,028.10-199,542.15-120,780.90

Finding the Fourth Proportional to 133,028.10, 199,542.15 and 120,780.90

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Solution

The fourth proportional to 133,028.10, 199,542.15 and 120,780.90 is: 181,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,028.10 : 199,542.15 = 120,780.90 : x
  2. Step 2: Convert to fraction form
    133,028.10/199,542.15 = 120,780.90/x
  3. Step 3: Cross multiply
    133,028.10x = 199,542.15 × 120,780.90
  4. Step 4: Simplify right side
    133,028.10x = 24,100,880,464.94
  5. Step 5: Solve for x
    x = 24,100,880,464.94/133,028.10
  6. Step 6: Final answer
    x = 181,171.35

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1.5x scale

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.