Home / 133,086.12-199,403.61-80,384.88

Finding the Fourth Proportional to 133,086.12, 199,403.61 and 80,384.88

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Solution

The fourth proportional to 133,086.12, 199,403.61 and 80,384.88 is: 120,441.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,086.12 : 199,403.61 = 80,384.88 : x
  2. Step 2: Convert to fraction form
    133,086.12/199,403.61 = 80,384.88/x
  3. Step 3: Cross multiply
    133,086.12x = 199,403.61 × 80,384.88
  4. Step 4: Simplify right side
    133,086.12x = 16,029,035,261.42
  5. Step 5: Solve for x
    x = 16,029,035,261.42/133,086.12
  6. Step 6: Final answer
    x = 120,441.07

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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.