Home / 133,036.16-199,546.95-80,431.52

Finding the Fourth Proportional to 133,036.16, 199,546.95 and 80,431.52

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Solution

The fourth proportional to 133,036.16, 199,546.95 and 80,431.52 is: 120,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,036.16 : 199,546.95 = 80,431.52 : x
  2. Step 2: Convert to fraction form
    133,036.16/199,546.95 = 80,431.52/x
  3. Step 3: Cross multiply
    133,036.16x = 199,546.95 × 80,431.52
  4. Step 4: Simplify right side
    133,036.16x = 16,049,864,499.86
  5. Step 5: Solve for x
    x = 16,049,864,499.86/133,036.16
  6. Step 6: Final answer
    x = 120,642.87

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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.