Home / 190,161.81-285,249.33-90,270.54

Finding the Fourth Proportional to 190,161.81, 285,249.33 and 90,270.54

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Solution

The fourth proportional to 190,161.81, 285,249.33 and 90,270.54 is: 135,408.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,161.81 : 285,249.33 = 90,270.54 : x
  2. Step 2: Convert to fraction form
    190,161.81/285,249.33 = 90,270.54/x
  3. Step 3: Cross multiply
    190,161.81x = 285,249.33 × 90,270.54
  4. Step 4: Simplify right side
    190,161.81x = 25,749,611,053.74
  5. Step 5: Solve for x
    x = 25,749,611,053.74/190,161.81
  6. Step 6: Final answer
    x = 135,408.95

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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.