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Finding the Fourth Proportional to 100,754.70, 151,137.45 and 30,628.68

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Solution

The fourth proportional to 100,754.70, 151,137.45 and 30,628.68 is: 45,944.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,754.70 : 151,137.45 = 30,628.68 : x
  2. Step 2: Convert to fraction form
    100,754.70/151,137.45 = 30,628.68/x
  3. Step 3: Cross multiply
    100,754.70x = 151,137.45 × 30,628.68
  4. Step 4: Simplify right side
    100,754.70x = 4,629,140,592.07
  5. Step 5: Solve for x
    x = 4,629,140,592.07/100,754.70
  6. Step 6: Final answer
    x = 45,944.66

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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.