Home / 258,733.63-387,669.84-90,161.04

Finding the Fourth Proportional to 258,733.63, 387,669.84 and 90,161.04

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Solution

The fourth proportional to 258,733.63, 387,669.84 and 90,161.04 is: 135,091.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,733.63 : 387,669.84 = 90,161.04 : x
  2. Step 2: Convert to fraction form
    258,733.63/387,669.84 = 90,161.04/x
  3. Step 3: Cross multiply
    258,733.63x = 387,669.84 × 90,161.04
  4. Step 4: Simplify right side
    258,733.63x = 34,952,715,951.03
  5. Step 5: Solve for x
    x = 34,952,715,951.03/258,733.63
  6. Step 6: Final answer
    x = 135,091.51

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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.