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Finding the Fourth Proportional to 94,515.60, 141,627.60 and 81,976.80

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Solution

The fourth proportional to 94,515.60, 141,627.60 and 81,976.80 is: 122,838.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,515.60 : 141,627.60 = 81,976.80 : x
  2. Step 2: Convert to fraction form
    94,515.60/141,627.60 = 81,976.80/x
  3. Step 3: Cross multiply
    94,515.60x = 141,627.60 × 81,976.80
  4. Step 4: Simplify right side
    94,515.60x = 11,610,177,439.68
  5. Step 5: Solve for x
    x = 11,610,177,439.68/94,515.60
  6. Step 6: Final answer
    x = 122,838.74

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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.