Home / 190,648.24-285,786.42-90,781.60

Finding the Fourth Proportional to 190,648.24, 285,786.42 and 90,781.60

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Solution

The fourth proportional to 190,648.24, 285,786.42 and 90,781.60 is: 136,083.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,648.24 : 285,786.42 = 90,781.60 : x
  2. Step 2: Convert to fraction form
    190,648.24/285,786.42 = 90,781.60/x
  3. Step 3: Cross multiply
    190,648.24x = 285,786.42 × 90,781.60
  4. Step 4: Simplify right side
    190,648.24x = 25,944,148,465.87
  5. Step 5: Solve for x
    x = 25,944,148,465.87/190,648.24
  6. Step 6: Final answer
    x = 136,083.86

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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.