Home / 258,101.21-387,151.82-100,366.57

Finding the Fourth Proportional to 258,101.21, 387,151.82 and 100,366.57

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Solution

The fourth proportional to 258,101.21, 387,151.82 and 100,366.57 is: 150,549.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,101.21 : 387,151.82 = 100,366.57 : x
  2. Step 2: Convert to fraction form
    258,101.21/387,151.82 = 100,366.57/x
  3. Step 3: Cross multiply
    258,101.21x = 387,151.82 × 100,366.57
  4. Step 4: Simplify right side
    258,101.21x = 38,857,100,242.66
  5. Step 5: Solve for x
    x = 38,857,100,242.66/258,101.21
  6. Step 6: Final answer
    x = 150,549.86

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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.