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Finding the Fourth Proportional to 135,955.75, 203,954.31 and 69,359.51

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Solution

The fourth proportional to 135,955.75, 203,954.31 and 69,359.51 is: 104,049.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,955.75 : 203,954.31 = 69,359.51 : x
  2. Step 2: Convert to fraction form
    135,955.75/203,954.31 = 69,359.51/x
  3. Step 3: Cross multiply
    135,955.75x = 203,954.31 × 69,359.51
  4. Step 4: Simplify right side
    135,955.75x = 14,146,171,003.99
  5. Step 5: Solve for x
    x = 14,146,171,003.99/135,955.75
  6. Step 6: Final answer
    x = 104,049.82

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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.