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Finding the Fourth Proportional to 133,838.60, 200,660.70 and 54,912.20

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Solution

The fourth proportional to 133,838.60, 200,660.70 and 54,912.20 is: 82,328.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,838.60 : 200,660.70 = 54,912.20 : x
  2. Step 2: Convert to fraction form
    133,838.60/200,660.70 = 54,912.20/x
  3. Step 3: Cross multiply
    133,838.60x = 200,660.70 × 54,912.20
  4. Step 4: Simplify right side
    133,838.60x = 11,018,720,490.54
  5. Step 5: Solve for x
    x = 11,018,720,490.54/133,838.60
  6. Step 6: Final answer
    x = 82,328.42

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1.5x scale

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.