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Finding the Fourth Proportional to 180,640.40, 270,991.04 and 66,794.90

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Solution

The fourth proportional to 180,640.40, 270,991.04 and 66,794.90 is: 100,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,640.40 : 270,991.04 = 66,794.90 : x
  2. Step 2: Convert to fraction form
    180,640.40/270,991.04 = 66,794.90/x
  3. Step 3: Cross multiply
    180,640.40x = 270,991.04 × 66,794.90
  4. Step 4: Simplify right side
    180,640.40x = 18,100,817,728.77
  5. Step 5: Solve for x
    x = 18,100,817,728.77/180,640.40
  6. Step 6: Final answer
    x = 100,203.60

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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.