Home / 135,571.62-187,046.04-78,203.24

Finding the Fourth Proportional to 135,571.62, 187,046.04 and 78,203.24

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Solution

The fourth proportional to 135,571.62, 187,046.04 and 78,203.24 is: 107,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,571.62 : 187,046.04 = 78,203.24 : x
  2. Step 2: Convert to fraction form
    135,571.62/187,046.04 = 78,203.24/x
  3. Step 3: Cross multiply
    135,571.62x = 187,046.04 × 78,203.24
  4. Step 4: Simplify right side
    135,571.62x = 14,627,605,421.94
  5. Step 5: Solve for x
    x = 14,627,605,421.94/135,571.62
  6. Step 6: Final answer
    x = 107,895.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.