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Finding the Fourth Proportional to 133,992.20, 200,915.40 and 55,114.40

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Solution

The fourth proportional to 133,992.20, 200,915.40 and 55,114.40 is: 82,641.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,992.20 : 200,915.40 = 55,114.40 : x
  2. Step 2: Convert to fraction form
    133,992.20/200,915.40 = 55,114.40/x
  3. Step 3: Cross multiply
    133,992.20x = 200,915.40 × 55,114.40
  4. Step 4: Simplify right side
    133,992.20x = 11,073,331,721.76
  5. Step 5: Solve for x
    x = 11,073,331,721.76/133,992.20
  6. Step 6: Final answer
    x = 82,641.61

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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.