Home / 100,453.62-138,625.57-55,132.34

Finding the Fourth Proportional to 100,453.62, 138,625.57 and 55,132.34

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Solution

The fourth proportional to 100,453.62, 138,625.57 and 55,132.34 is: 76,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.62 : 138,625.57 = 55,132.34 : x
  2. Step 2: Convert to fraction form
    100,453.62/138,625.57 = 55,132.34/x
  3. Step 3: Cross multiply
    100,453.62x = 138,625.57 × 55,132.34
  4. Step 4: Simplify right side
    100,453.62x = 7,642,752,057.93
  5. Step 5: Solve for x
    x = 7,642,752,057.93/100,453.62
  6. Step 6: Final answer
    x = 76,082.40

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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.