Home / 258,190.30-387,168.81-91,982.62

Finding the Fourth Proportional to 258,190.30, 387,168.81 and 91,982.62

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Solution

The fourth proportional to 258,190.30, 387,168.81 and 91,982.62 is: 137,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,190.30 : 387,168.81 = 91,982.62 : x
  2. Step 2: Convert to fraction form
    258,190.30/387,168.81 = 91,982.62/x
  3. Step 3: Cross multiply
    258,190.30x = 387,168.81 × 91,982.62
  4. Step 4: Simplify right side
    258,190.30x = 35,612,801,526.08
  5. Step 5: Solve for x
    x = 35,612,801,526.08/258,190.30
  6. Step 6: Final answer
    x = 137,932.38

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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.