Home / 100,928.68-139,284.90-55,608.52

Finding the Fourth Proportional to 100,928.68, 139,284.90 and 55,608.52

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Solution

The fourth proportional to 100,928.68, 139,284.90 and 55,608.52 is: 76,741.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,928.68 : 139,284.90 = 55,608.52 : x
  2. Step 2: Convert to fraction form
    100,928.68/139,284.90 = 55,608.52/x
  3. Step 3: Cross multiply
    100,928.68x = 139,284.90 × 55,608.52
  4. Step 4: Simplify right side
    100,928.68x = 7,745,427,147.35
  5. Step 5: Solve for x
    x = 7,745,427,147.35/100,928.68
  6. Step 6: Final answer
    x = 76,741.59

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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.