Home / 108,449.78-149,669.24-79,899.98

Finding the Fourth Proportional to 108,449.78, 149,669.24 and 79,899.98

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Solution

The fourth proportional to 108,449.78, 149,669.24 and 79,899.98 is: 110,268.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,449.78 : 149,669.24 = 79,899.98 : x
  2. Step 2: Convert to fraction form
    108,449.78/149,669.24 = 79,899.98/x
  3. Step 3: Cross multiply
    108,449.78x = 149,669.24 × 79,899.98
  4. Step 4: Simplify right side
    108,449.78x = 11,958,568,134.77
  5. Step 5: Solve for x
    x = 11,958,568,134.77/108,449.78
  6. Step 6: Final answer
    x = 110,268.26

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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.