Home / 100,217.39-138,311.66-57,777.44

Finding the Fourth Proportional to 100,217.39, 138,311.66 and 57,777.44

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Solution

The fourth proportional to 100,217.39, 138,311.66 and 57,777.44 is: 79,739.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,217.39 : 138,311.66 = 57,777.44 : x
  2. Step 2: Convert to fraction form
    100,217.39/138,311.66 = 57,777.44/x
  3. Step 3: Cross multiply
    100,217.39x = 138,311.66 × 57,777.44
  4. Step 4: Simplify right side
    100,217.39x = 7,991,293,636.95
  5. Step 5: Solve for x
    x = 7,991,293,636.95/100,217.39
  6. Step 6: Final answer
    x = 79,739.59

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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.