Home / 190,647.90-285,785.96-90,781.29

Finding the Fourth Proportional to 190,647.90, 285,785.96 and 90,781.29

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Solution

The fourth proportional to 190,647.90, 285,785.96 and 90,781.29 is: 136,083.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,647.90 : 285,785.96 = 90,781.29 : x
  2. Step 2: Convert to fraction form
    190,647.90/285,785.96 = 90,781.29/x
  3. Step 3: Cross multiply
    190,647.90x = 285,785.96 × 90,781.29
  4. Step 4: Simplify right side
    190,647.90x = 25,944,017,658.78
  5. Step 5: Solve for x
    x = 25,944,017,658.78/190,647.90
  6. Step 6: Final answer
    x = 136,083.42

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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.