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Finding the Fourth Proportional to 108,723.82, 150,040.48 and 63,400.54

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Solution

The fourth proportional to 108,723.82, 150,040.48 and 63,400.54 is: 87,493.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,723.82 : 150,040.48 = 63,400.54 : x
  2. Step 2: Convert to fraction form
    108,723.82/150,040.48 = 63,400.54/x
  3. Step 3: Cross multiply
    108,723.82x = 150,040.48 × 63,400.54
  4. Step 4: Simplify right side
    108,723.82x = 9,512,647,453.86
  5. Step 5: Solve for x
    x = 9,512,647,453.86/108,723.82
  6. Step 6: Final answer
    x = 87,493.68

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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.