Home / 100,186.33-138,257.20-54,245.83

Finding the Fourth Proportional to 100,186.33, 138,257.20 and 54,245.83

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Solution

The fourth proportional to 100,186.33, 138,257.20 and 54,245.83 is: 74,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,186.33 : 138,257.20 = 54,245.83 : x
  2. Step 2: Convert to fraction form
    100,186.33/138,257.20 = 54,245.83/x
  3. Step 3: Cross multiply
    100,186.33x = 138,257.20 × 54,245.83
  4. Step 4: Simplify right side
    100,186.33x = 7,499,876,567.48
  5. Step 5: Solve for x
    x = 7,499,876,567.48/100,186.33
  6. Step 6: Final answer
    x = 74,859.28

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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.