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Finding the Fourth Proportional to 118,391.88, 177,611.28 and 43,512.64

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Solution

The fourth proportional to 118,391.88, 177,611.28 and 43,512.64 is: 65,277.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,391.88 : 177,611.28 = 43,512.64 : x
  2. Step 2: Convert to fraction form
    118,391.88/177,611.28 = 43,512.64/x
  3. Step 3: Cross multiply
    118,391.88x = 177,611.28 × 43,512.64
  4. Step 4: Simplify right side
    118,391.88x = 7,728,336,323.20
  5. Step 5: Solve for x
    x = 7,728,336,323.20/118,391.88
  6. Step 6: Final answer
    x = 65,277.59

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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.