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Finding the Fourth Proportional to 100,224.55, 138,308.12 and 54,903.43

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Solution

The fourth proportional to 100,224.55, 138,308.12 and 54,903.43 is: 75,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,224.55 : 138,308.12 = 54,903.43 : x
  2. Step 2: Convert to fraction form
    100,224.55/138,308.12 = 54,903.43/x
  3. Step 3: Cross multiply
    100,224.55x = 138,308.12 × 54,903.43
  4. Step 4: Simplify right side
    100,224.55x = 7,593,589,493.31
  5. Step 5: Solve for x
    x = 7,593,589,493.31/100,224.55
  6. Step 6: Final answer
    x = 75,765.77

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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.