Home / 81,198.66-121,627.89-51,601.26

Finding the Fourth Proportional to 81,198.66, 121,627.89 and 51,601.26

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Solution

The fourth proportional to 81,198.66, 121,627.89 and 51,601.26 is: 77,293.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,198.66 : 121,627.89 = 51,601.26 : x
  2. Step 2: Convert to fraction form
    81,198.66/121,627.89 = 51,601.26/x
  3. Step 3: Cross multiply
    81,198.66x = 121,627.89 × 51,601.26
  4. Step 4: Simplify right side
    81,198.66x = 6,276,152,375.14
  5. Step 5: Solve for x
    x = 6,276,152,375.14/81,198.66
  6. Step 6: Final answer
    x = 77,293.79

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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.