Home / 257,961.21-387,091.26-108,188.16

Finding the Fourth Proportional to 257,961.21, 387,091.26 and 108,188.16

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Solution

The fourth proportional to 257,961.21, 387,091.26 and 108,188.16 is: 162,344.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,961.21 : 387,091.26 = 108,188.16 : x
  2. Step 2: Convert to fraction form
    257,961.21/387,091.26 = 108,188.16/x
  3. Step 3: Cross multiply
    257,961.21x = 387,091.26 × 108,188.16
  4. Step 4: Simplify right side
    257,961.21x = 41,878,691,171.48
  5. Step 5: Solve for x
    x = 41,878,691,171.48/257,961.21
  6. Step 6: Final answer
    x = 162,344.92

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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.