Home / 120,138.24-180,253.44-46,272

Finding the Fourth Proportional to 120,138.24, 180,253.44 and 46,272

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Solution

The fourth proportional to 120,138.24, 180,253.44 and 46,272 is: 69,425.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,138.24 : 180,253.44 = 46,272 : x
  2. Step 2: Convert to fraction form
    120,138.24/180,253.44 = 46,272/x
  3. Step 3: Cross multiply
    120,138.24x = 180,253.44 × 46,272
  4. Step 4: Simplify right side
    120,138.24x = 8,340,687,175.68
  5. Step 5: Solve for x
    x = 8,340,687,175.68/120,138.24
  6. Step 6: Final answer
    x = 69,425.75

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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.