Home / 100,404.58-138,556.26-55,692.58

Finding the Fourth Proportional to 100,404.58, 138,556.26 and 55,692.58

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Solution

The fourth proportional to 100,404.58, 138,556.26 and 55,692.58 is: 76,854.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,404.58 : 138,556.26 = 55,692.58 : x
  2. Step 2: Convert to fraction form
    100,404.58/138,556.26 = 55,692.58/x
  3. Step 3: Cross multiply
    100,404.58x = 138,556.26 × 55,692.58
  4. Step 4: Simplify right side
    100,404.58x = 7,716,555,594.55
  5. Step 5: Solve for x
    x = 7,716,555,594.55/100,404.58
  6. Step 6: Final answer
    x = 76,854.62

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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.