Home / 190,112.92-285,111.78-79,279

Finding the Fourth Proportional to 190,112.92, 285,111.78 and 79,279

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Solution

The fourth proportional to 190,112.92, 285,111.78 and 79,279 is: 118,894.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,112.92 : 285,111.78 = 79,279 : x
  2. Step 2: Convert to fraction form
    190,112.92/285,111.78 = 79,279/x
  3. Step 3: Cross multiply
    190,112.92x = 285,111.78 × 79,279
  4. Step 4: Simplify right side
    190,112.92x = 22,603,376,806.62
  5. Step 5: Solve for x
    x = 22,603,376,806.62/190,112.92
  6. Step 6: Final answer
    x = 118,894.48

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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.