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Finding the Fourth Proportional to 118,910.40, 178,365.60 and 62,728.80

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Solution

The fourth proportional to 118,910.40, 178,365.60 and 62,728.80 is: 94,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,910.40 : 178,365.60 = 62,728.80 : x
  2. Step 2: Convert to fraction form
    118,910.40/178,365.60 = 62,728.80/x
  3. Step 3: Cross multiply
    118,910.40x = 178,365.60 × 62,728.80
  4. Step 4: Simplify right side
    118,910.40x = 11,188,660,049.28
  5. Step 5: Solve for x
    x = 11,188,660,049.28/118,910.40
  6. Step 6: Final answer
    x = 94,093.20

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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.