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Finding the Fourth Proportional to 203,836.84, 305,809.35 and 70,716.76

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Solution

The fourth proportional to 203,836.84, 305,809.35 and 70,716.76 is: 106,093.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,836.84 : 305,809.35 = 70,716.76 : x
  2. Step 2: Convert to fraction form
    203,836.84/305,809.35 = 70,716.76/x
  3. Step 3: Cross multiply
    203,836.84x = 305,809.35 × 70,716.76
  4. Step 4: Simplify right side
    203,836.84x = 21,625,846,409.71
  5. Step 5: Solve for x
    x = 21,625,846,409.71/203,836.84
  6. Step 6: Final answer
    x = 106,093.91

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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.