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Finding the Fourth Proportional to 135,393.88, 203,277.16 and 68,879

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Solution

The fourth proportional to 135,393.88, 203,277.16 and 68,879 is: 103,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,393.88 : 203,277.16 = 68,879 : x
  2. Step 2: Convert to fraction form
    135,393.88/203,277.16 = 68,879/x
  3. Step 3: Cross multiply
    135,393.88x = 203,277.16 × 68,879
  4. Step 4: Simplify right side
    135,393.88x = 14,001,527,503.64
  5. Step 5: Solve for x
    x = 14,001,527,503.64/135,393.88
  6. Step 6: Final answer
    x = 103,413.30

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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.