Home / 133,081.40-199,522.26-80,480.12

Finding the Fourth Proportional to 133,081.40, 199,522.26 and 80,480.12

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Solution

The fourth proportional to 133,081.40, 199,522.26 and 80,480.12 is: 120,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,081.40 : 199,522.26 = 80,480.12 : x
  2. Step 2: Convert to fraction form
    133,081.40/199,522.26 = 80,480.12/x
  3. Step 3: Cross multiply
    133,081.40x = 199,522.26 × 80,480.12
  4. Step 4: Simplify right side
    133,081.40x = 16,057,575,427.47
  5. Step 5: Solve for x
    x = 16,057,575,427.47/133,081.40
  6. Step 6: Final answer
    x = 120,659.80

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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.