Home / 155,768.70-214,961.67-87,786.75

Finding the Fourth Proportional to 155,768.70, 214,961.67 and 87,786.75

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Solution

The fourth proportional to 155,768.70, 214,961.67 and 87,786.75 is: 121,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,768.70 : 214,961.67 = 87,786.75 : x
  2. Step 2: Convert to fraction form
    155,768.70/214,961.67 = 87,786.75/x
  3. Step 3: Cross multiply
    155,768.70x = 214,961.67 × 87,786.75
  4. Step 4: Simplify right side
    155,768.70x = 18,870,786,383.87
  5. Step 5: Solve for x
    x = 18,870,786,383.87/155,768.70
  6. Step 6: Final answer
    x = 121,146.20

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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.