Home / 197,138.46-271,956.24-129,126

Finding the Fourth Proportional to 197,138.46, 271,956.24 and 129,126

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Solution

The fourth proportional to 197,138.46, 271,956.24 and 129,126 is: 178,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,138.46 : 271,956.24 = 129,126 : x
  2. Step 2: Convert to fraction form
    197,138.46/271,956.24 = 129,126/x
  3. Step 3: Cross multiply
    197,138.46x = 271,956.24 × 129,126
  4. Step 4: Simplify right side
    197,138.46x = 35,116,621,446.24
  5. Step 5: Solve for x
    x = 35,116,621,446.24/197,138.46
  6. Step 6: Final answer
    x = 178,131.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.