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Finding the Fourth Proportional to 101,138.76, 151,563.56 and 74,274.03

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Solution

The fourth proportional to 101,138.76, 151,563.56 and 74,274.03 is: 111,304.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,138.76 : 151,563.56 = 74,274.03 : x
  2. Step 2: Convert to fraction form
    101,138.76/151,563.56 = 74,274.03/x
  3. Step 3: Cross multiply
    101,138.76x = 151,563.56 × 74,274.03
  4. Step 4: Simplify right side
    101,138.76x = 11,257,236,030.98
  5. Step 5: Solve for x
    x = 11,257,236,030.98/101,138.76
  6. Step 6: Final answer
    x = 111,304.87

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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.