Home / 205,331.60-307,997.40-126,189.20

Finding the Fourth Proportional to 205,331.60, 307,997.40 and 126,189.20

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Solution

The fourth proportional to 205,331.60, 307,997.40 and 126,189.20 is: 189,283.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,331.60 : 307,997.40 = 126,189.20 : x
  2. Step 2: Convert to fraction form
    205,331.60/307,997.40 = 126,189.20/x
  3. Step 3: Cross multiply
    205,331.60x = 307,997.40 × 126,189.20
  4. Step 4: Simplify right side
    205,331.60x = 38,865,945,508.08
  5. Step 5: Solve for x
    x = 38,865,945,508.08/205,331.60
  6. Step 6: Final answer
    x = 189,283.80

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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.