Home / 205,273.60-307,910.40-126,131.20

Finding the Fourth Proportional to 205,273.60, 307,910.40 and 126,131.20

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Solution

The fourth proportional to 205,273.60, 307,910.40 and 126,131.20 is: 189,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,273.60 : 307,910.40 = 126,131.20 : x
  2. Step 2: Convert to fraction form
    205,273.60/307,910.40 = 126,131.20/x
  3. Step 3: Cross multiply
    205,273.60x = 307,910.40 × 126,131.20
  4. Step 4: Simplify right side
    205,273.60x = 38,837,108,244.48
  5. Step 5: Solve for x
    x = 38,837,108,244.48/205,273.60
  6. Step 6: Final answer
    x = 189,196.80

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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.