Home / 110,455.40-165,519.26-81,128.04

Finding the Fourth Proportional to 110,455.40, 165,519.26 and 81,128.04

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Solution

The fourth proportional to 110,455.40, 165,519.26 and 81,128.04 is: 121,571.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,455.40 : 165,519.26 = 81,128.04 : x
  2. Step 2: Convert to fraction form
    110,455.40/165,519.26 = 81,128.04/x
  3. Step 3: Cross multiply
    110,455.40x = 165,519.26 × 81,128.04
  4. Step 4: Simplify right side
    110,455.40x = 13,428,253,146.05
  5. Step 5: Solve for x
    x = 13,428,253,146.05/110,455.40
  6. Step 6: Final answer
    x = 121,571.72

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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.