Home / 144,742.88-199,744.08-81,081.20

Finding the Fourth Proportional to 144,742.88, 199,744.08 and 81,081.20

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Solution

The fourth proportional to 144,742.88, 199,744.08 and 81,081.20 is: 111,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,742.88 : 199,744.08 = 81,081.20 : x
  2. Step 2: Convert to fraction form
    144,742.88/199,744.08 = 81,081.20/x
  3. Step 3: Cross multiply
    144,742.88x = 199,744.08 × 81,081.20
  4. Step 4: Simplify right side
    144,742.88x = 16,195,489,699.30
  5. Step 5: Solve for x
    x = 16,195,489,699.30/144,742.88
  6. Step 6: Final answer
    x = 111,891.44

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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.