Home / 165,136.89-247,531.86-80,780.52

Finding the Fourth Proportional to 165,136.89, 247,531.86 and 80,780.52

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Solution

The fourth proportional to 165,136.89, 247,531.86 and 80,780.52 is: 121,085.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,136.89 : 247,531.86 = 80,780.52 : x
  2. Step 2: Convert to fraction form
    165,136.89/247,531.86 = 80,780.52/x
  3. Step 3: Cross multiply
    165,136.89x = 247,531.86 × 80,780.52
  4. Step 4: Simplify right side
    165,136.89x = 19,995,752,367.37
  5. Step 5: Solve for x
    x = 19,995,752,367.37/165,136.89
  6. Step 6: Final answer
    x = 121,085.92

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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.