Home / 165,136.39-247,531.11-80,780.02

Finding the Fourth Proportional to 165,136.39, 247,531.11 and 80,780.02

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Solution

The fourth proportional to 165,136.39, 247,531.11 and 80,780.02 is: 121,085.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,136.39 : 247,531.11 = 80,780.02 : x
  2. Step 2: Convert to fraction form
    165,136.39/247,531.11 = 80,780.02/x
  3. Step 3: Cross multiply
    165,136.39x = 247,531.11 × 80,780.02
  4. Step 4: Simplify right side
    165,136.39x = 19,995,568,016.42
  5. Step 5: Solve for x
    x = 19,995,568,016.42/165,136.39
  6. Step 6: Final answer
    x = 121,085.17

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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.