Home / 120,268.88-180,399.59-57,134.43

Finding the Fourth Proportional to 120,268.88, 180,399.59 and 57,134.43

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Solution

The fourth proportional to 120,268.88, 180,399.59 and 57,134.43 is: 85,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,268.88 : 180,399.59 = 57,134.43 : x
  2. Step 2: Convert to fraction form
    120,268.88/180,399.59 = 57,134.43/x
  3. Step 3: Cross multiply
    120,268.88x = 180,399.59 × 57,134.43
  4. Step 4: Simplify right side
    120,268.88x = 10,307,027,461.21
  5. Step 5: Solve for x
    x = 10,307,027,461.21/120,268.88
  6. Step 6: Final answer
    x = 85,699.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.