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Finding the Fourth Proportional to 108,745.34, 150,010.57 and 63,406.78

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Solution

The fourth proportional to 108,745.34, 150,010.57 and 63,406.78 is: 87,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,745.34 : 150,010.57 = 63,406.78 : x
  2. Step 2: Convert to fraction form
    108,745.34/150,010.57 = 63,406.78/x
  3. Step 3: Cross multiply
    108,745.34x = 150,010.57 × 63,406.78
  4. Step 4: Simplify right side
    108,745.34x = 9,511,687,209.66
  5. Step 5: Solve for x
    x = 9,511,687,209.66/108,745.34
  6. Step 6: Final answer
    x = 87,467.54

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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.