Home / 155,806.74-214,991.82-87,812.91

Finding the Fourth Proportional to 155,806.74, 214,991.82 and 87,812.91

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Solution

The fourth proportional to 155,806.74, 214,991.82 and 87,812.91 is: 121,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,806.74 : 214,991.82 = 87,812.91 : x
  2. Step 2: Convert to fraction form
    155,806.74/214,991.82 = 87,812.91/x
  3. Step 3: Cross multiply
    155,806.74x = 214,991.82 × 87,812.91
  4. Step 4: Simplify right side
    155,806.74x = 18,879,057,340.40
  5. Step 5: Solve for x
    x = 18,879,057,340.40/155,806.74
  6. Step 6: Final answer
    x = 121,169.71

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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.