Home / 208,058.20-312,087.30-133,408.60

Finding the Fourth Proportional to 208,058.20, 312,087.30 and 133,408.60

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Solution

The fourth proportional to 208,058.20, 312,087.30 and 133,408.60 is: 200,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,058.20 : 312,087.30 = 133,408.60 : x
  2. Step 2: Convert to fraction form
    208,058.20/312,087.30 = 133,408.60/x
  3. Step 3: Cross multiply
    208,058.20x = 312,087.30 × 133,408.60
  4. Step 4: Simplify right side
    208,058.20x = 41,635,129,770.78
  5. Step 5: Solve for x
    x = 41,635,129,770.78/208,058.20
  6. Step 6: Final answer
    x = 200,112.90

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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.