Home / 100,452.87-138,624.53-55,131.59

Finding the Fourth Proportional to 100,452.87, 138,624.53 and 55,131.59

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Solution

The fourth proportional to 100,452.87, 138,624.53 and 55,131.59 is: 76,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,452.87 : 138,624.53 = 55,131.59 : x
  2. Step 2: Convert to fraction form
    100,452.87/138,624.53 = 55,131.59/x
  3. Step 3: Cross multiply
    100,452.87x = 138,624.53 × 55,131.59
  4. Step 4: Simplify right side
    100,452.87x = 7,642,591,236.29
  5. Step 5: Solve for x
    x = 7,642,591,236.29/100,452.87
  6. Step 6: Final answer
    x = 76,081.36

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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.