Home / 126,147.97-188,835.58-81,686.26

Finding the Fourth Proportional to 126,147.97, 188,835.58 and 81,686.26

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Solution

The fourth proportional to 126,147.97, 188,835.58 and 81,686.26 is: 122,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,147.97 : 188,835.58 = 81,686.26 : x
  2. Step 2: Convert to fraction form
    126,147.97/188,835.58 = 81,686.26/x
  3. Step 3: Cross multiply
    126,147.97x = 188,835.58 × 81,686.26
  4. Step 4: Simplify right side
    126,147.97x = 15,425,272,285.13
  5. Step 5: Solve for x
    x = 15,425,272,285.13/126,147.97
  6. Step 6: Final answer
    x = 122,279.20

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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.