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Finding the Fourth Proportional to 135,452.34, 203,303.25 and 68,940

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Solution

The fourth proportional to 135,452.34, 203,303.25 and 68,940 is: 103,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,452.34 : 203,303.25 = 68,940 : x
  2. Step 2: Convert to fraction form
    135,452.34/203,303.25 = 68,940/x
  3. Step 3: Cross multiply
    135,452.34x = 203,303.25 × 68,940
  4. Step 4: Simplify right side
    135,452.34x = 14,015,726,055
  5. Step 5: Solve for x
    x = 14,015,726,055/135,452.34
  6. Step 6: Final answer
    x = 103,473.49

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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.