Home / 100,104.68-138,122.82-63,819.92

Finding the Fourth Proportional to 100,104.68, 138,122.82 and 63,819.92

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Solution

The fourth proportional to 100,104.68, 138,122.82 and 63,819.92 is: 88,057.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,104.68 : 138,122.82 = 63,819.92 : x
  2. Step 2: Convert to fraction form
    100,104.68/138,122.82 = 63,819.92/x
  3. Step 3: Cross multiply
    100,104.68x = 138,122.82 × 63,819.92
  4. Step 4: Simplify right side
    100,104.68x = 8,814,987,322.57
  5. Step 5: Solve for x
    x = 8,814,987,322.57/100,104.68
  6. Step 6: Final answer
    x = 88,057.69

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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.