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Finding the Fourth Proportional to 135,504.83, 203,382.18 and 68,992.89

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Solution

The fourth proportional to 135,504.83, 203,382.18 and 68,992.89 is: 103,552.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,504.83 : 203,382.18 = 68,992.89 : x
  2. Step 2: Convert to fraction form
    135,504.83/203,382.18 = 68,992.89/x
  3. Step 3: Cross multiply
    135,504.83x = 203,382.18 × 68,992.89
  4. Step 4: Simplify right side
    135,504.83x = 14,031,924,372.70
  5. Step 5: Solve for x
    x = 14,031,924,372.70/135,504.83
  6. Step 6: Final answer
    x = 103,552.95

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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.