Home / 136,789.48-188,770.26-80,201.80

Finding the Fourth Proportional to 136,789.48, 188,770.26 and 80,201.80

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Solution

The fourth proportional to 136,789.48, 188,770.26 and 80,201.80 is: 110,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,789.48 : 188,770.26 = 80,201.80 : x
  2. Step 2: Convert to fraction form
    136,789.48/188,770.26 = 80,201.80/x
  3. Step 3: Cross multiply
    136,789.48x = 188,770.26 × 80,201.80
  4. Step 4: Simplify right side
    136,789.48x = 15,139,714,638.47
  5. Step 5: Solve for x
    x = 15,139,714,638.47/136,789.48
  6. Step 6: Final answer
    x = 110,678.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.