Home / 258,562.20-387,843.30-81,083.52

Finding the Fourth Proportional to 258,562.20, 387,843.30 and 81,083.52

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Solution

The fourth proportional to 258,562.20, 387,843.30 and 81,083.52 is: 121,625.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,562.20 : 387,843.30 = 81,083.52 : x
  2. Step 2: Convert to fraction form
    258,562.20/387,843.30 = 81,083.52/x
  3. Step 3: Cross multiply
    258,562.20x = 387,843.30 × 81,083.52
  4. Step 4: Simplify right side
    258,562.20x = 31,447,699,972.42
  5. Step 5: Solve for x
    x = 31,447,699,972.42/258,562.20
  6. Step 6: Final answer
    x = 121,625.28

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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.