Home / 100,548.24-138,758.24-55,230.41

Finding the Fourth Proportional to 100,548.24, 138,758.24 and 55,230.41

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Solution

The fourth proportional to 100,548.24, 138,758.24 and 55,230.41 is: 76,218.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,548.24 : 138,758.24 = 55,230.41 : x
  2. Step 2: Convert to fraction form
    100,548.24/138,758.24 = 55,230.41/x
  3. Step 3: Cross multiply
    100,548.24x = 138,758.24 × 55,230.41
  4. Step 4: Simplify right side
    100,548.24x = 7,663,674,209.93
  5. Step 5: Solve for x
    x = 7,663,674,209.93/100,548.24
  6. Step 6: Final answer
    x = 76,218.88

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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.