Home / 127,456.74-191,249.37-90,255.87

Finding the Fourth Proportional to 127,456.74, 191,249.37 and 90,255.87

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Solution

The fourth proportional to 127,456.74, 191,249.37 and 90,255.87 is: 135,429.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,456.74 : 191,249.37 = 90,255.87 : x
  2. Step 2: Convert to fraction form
    127,456.74/191,249.37 = 90,255.87/x
  3. Step 3: Cross multiply
    127,456.74x = 191,249.37 × 90,255.87
  4. Step 4: Simplify right side
    127,456.74x = 17,261,378,276.30
  5. Step 5: Solve for x
    x = 17,261,378,276.30/127,456.74
  6. Step 6: Final answer
    x = 135,429.31

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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.