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Finding the Fourth Proportional to 103,640.62, 155,520.60 and 43,664.44

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Solution

The fourth proportional to 103,640.62, 155,520.60 and 43,664.44 is: 65,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.62 : 155,520.60 = 43,664.44 : x
  2. Step 2: Convert to fraction form
    103,640.62/155,520.60 = 43,664.44/x
  3. Step 3: Cross multiply
    103,640.62x = 155,520.60 × 43,664.44
  4. Step 4: Simplify right side
    103,640.62x = 6,790,719,907.46
  5. Step 5: Solve for x
    x = 6,790,719,907.46/103,640.62
  6. Step 6: Final answer
    x = 65,521.80

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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.