Home / 197,138.84-271,956.76-129,126.38

Finding the Fourth Proportional to 197,138.84, 271,956.76 and 129,126.38

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Solution

The fourth proportional to 197,138.84, 271,956.76 and 129,126.38 is: 178,132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,138.84 : 271,956.76 = 129,126.38 : x
  2. Step 2: Convert to fraction form
    197,138.84/271,956.76 = 129,126.38/x
  3. Step 3: Cross multiply
    197,138.84x = 271,956.76 × 129,126.38
  4. Step 4: Simplify right side
    197,138.84x = 35,116,790,252.73
  5. Step 5: Solve for x
    x = 35,116,790,252.73/197,138.84
  6. Step 6: Final answer
    x = 178,132.28

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1.5x scale

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.