Home / 100,453.87-138,625.91-55,132.59

Finding the Fourth Proportional to 100,453.87, 138,625.91 and 55,132.59

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Solution

The fourth proportional to 100,453.87, 138,625.91 and 55,132.59 is: 76,082.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.87 : 138,625.91 = 55,132.59 : x
  2. Step 2: Convert to fraction form
    100,453.87/138,625.91 = 55,132.59/x
  3. Step 3: Cross multiply
    100,453.87x = 138,625.91 × 55,132.59
  4. Step 4: Simplify right side
    100,453.87x = 7,642,805,459.41
  5. Step 5: Solve for x
    x = 7,642,805,459.41/100,453.87
  6. Step 6: Final answer
    x = 76,082.74

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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.