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Finding the Fourth Proportional to 135,819.72, 203,604.86 and 47,011.12

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Solution

The fourth proportional to 135,819.72, 203,604.86 and 47,011.12 is: 70,473.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,819.72 : 203,604.86 = 47,011.12 : x
  2. Step 2: Convert to fraction form
    135,819.72/203,604.86 = 47,011.12/x
  3. Step 3: Cross multiply
    135,819.72x = 203,604.86 × 47,011.12
  4. Step 4: Simplify right side
    135,819.72x = 9,571,692,506.04
  5. Step 5: Solve for x
    x = 9,571,692,506.04/135,819.72
  6. Step 6: Final answer
    x = 70,473.51

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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.