Home / 100,418.32-138,576.09-55,096.71

Finding the Fourth Proportional to 100,418.32, 138,576.09 and 55,096.71

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Solution

The fourth proportional to 100,418.32, 138,576.09 and 55,096.71 is: 76,032.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,418.32 : 138,576.09 = 55,096.71 : x
  2. Step 2: Convert to fraction form
    100,418.32/138,576.09 = 55,096.71/x
  3. Step 3: Cross multiply
    100,418.32x = 138,576.09 × 55,096.71
  4. Step 4: Simplify right side
    100,418.32x = 7,635,086,643.66
  5. Step 5: Solve for x
    x = 7,635,086,643.66/100,418.32
  6. Step 6: Final answer
    x = 76,032.81

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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.