Home / 100,229.26-138,316.44-54,908.89

Finding the Fourth Proportional to 100,229.26, 138,316.44 and 54,908.89

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Solution

The fourth proportional to 100,229.26, 138,316.44 and 54,908.89 is: 75,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,229.26 : 138,316.44 = 54,908.89 : x
  2. Step 2: Convert to fraction form
    100,229.26/138,316.44 = 54,908.89/x
  3. Step 3: Cross multiply
    100,229.26x = 138,316.44 × 54,908.89
  4. Step 4: Simplify right side
    100,229.26x = 7,594,802,189.15
  5. Step 5: Solve for x
    x = 7,594,802,189.15/100,229.26
  6. Step 6: Final answer
    x = 75,774.30

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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.