Home / 258,140.49-387,077.66-115,863.80

Finding the Fourth Proportional to 258,140.49, 387,077.66 and 115,863.80

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Solution

The fourth proportional to 258,140.49, 387,077.66 and 115,863.80 is: 173,735.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,140.49 : 387,077.66 = 115,863.80 : x
  2. Step 2: Convert to fraction form
    258,140.49/387,077.66 = 115,863.80/x
  3. Step 3: Cross multiply
    258,140.49x = 387,077.66 × 115,863.80
  4. Step 4: Simplify right side
    258,140.49x = 44,848,289,076.49
  5. Step 5: Solve for x
    x = 44,848,289,076.49/258,140.49
  6. Step 6: Final answer
    x = 173,735.97

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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.