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Finding the Fourth Proportional to 118,153.20, 177,229.80 and 39,279.60

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Solution

The fourth proportional to 118,153.20, 177,229.80 and 39,279.60 is: 58,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,153.20 : 177,229.80 = 39,279.60 : x
  2. Step 2: Convert to fraction form
    118,153.20/177,229.80 = 39,279.60/x
  3. Step 3: Cross multiply
    118,153.20x = 177,229.80 × 39,279.60
  4. Step 4: Simplify right side
    118,153.20x = 6,961,515,652.08
  5. Step 5: Solve for x
    x = 6,961,515,652.08/118,153.20
  6. Step 6: Final answer
    x = 58,919.40

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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.