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Finding the Fourth Proportional to 118,480.32, 163,520.64 and 68,169.60

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Solution

The fourth proportional to 118,480.32, 163,520.64 and 68,169.60 is: 94,084.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,480.32 : 163,520.64 = 68,169.60 : x
  2. Step 2: Convert to fraction form
    118,480.32/163,520.64 = 68,169.60/x
  3. Step 3: Cross multiply
    118,480.32x = 163,520.64 × 68,169.60
  4. Step 4: Simplify right side
    118,480.32x = 11,147,136,620.54
  5. Step 5: Solve for x
    x = 11,147,136,620.54/118,480.32
  6. Step 6: Final answer
    x = 94,084.29

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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.