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Finding the Fourth Proportional to 159,591, 220,255.53 and 91,629.28

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Solution

The fourth proportional to 159,591, 220,255.53 and 91,629.28 is: 126,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,591 : 220,255.53 = 91,629.28 : x
  2. Step 2: Convert to fraction form
    159,591/220,255.53 = 91,629.28/x
  3. Step 3: Cross multiply
    159,591x = 220,255.53 × 91,629.28
  4. Step 4: Simplify right side
    159,591x = 20,181,854,528.64
  5. Step 5: Solve for x
    x = 20,181,854,528.64/159,591
  6. Step 6: Final answer
    x = 126,459.85

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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.