Home / 133,115.86-199,501.44-54,138.34

Finding the Fourth Proportional to 133,115.86, 199,501.44 and 54,138.34

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Solution

The fourth proportional to 133,115.86, 199,501.44 and 54,138.34 is: 81,137.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,115.86 : 199,501.44 = 54,138.34 : x
  2. Step 2: Convert to fraction form
    133,115.86/199,501.44 = 54,138.34/x
  3. Step 3: Cross multiply
    133,115.86x = 199,501.44 × 54,138.34
  4. Step 4: Simplify right side
    133,115.86x = 10,800,676,789.21
  5. Step 5: Solve for x
    x = 10,800,676,789.21/133,115.86
  6. Step 6: Final answer
    x = 81,137.42

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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.