Home / 100,549.54-138,758.26-55,227.51

Finding the Fourth Proportional to 100,549.54, 138,758.26 and 55,227.51

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Solution

The fourth proportional to 100,549.54, 138,758.26 and 55,227.51 is: 76,213.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,549.54 : 138,758.26 = 55,227.51 : x
  2. Step 2: Convert to fraction form
    100,549.54/138,758.26 = 55,227.51/x
  3. Step 3: Cross multiply
    100,549.54x = 138,758.26 × 55,227.51
  4. Step 4: Simplify right side
    100,549.54x = 7,663,273,191.73
  5. Step 5: Solve for x
    x = 7,663,273,191.73/100,549.54
  6. Step 6: Final answer
    x = 76,213.91

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1.5x scale

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.