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Finding the Fourth Proportional to 118,913.75, 164,100.98 and 68,612.75

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Solution

The fourth proportional to 118,913.75, 164,100.98 and 68,612.75 is: 94,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,913.75 : 164,100.98 = 68,612.75 : x
  2. Step 2: Convert to fraction form
    118,913.75/164,100.98 = 68,612.75/x
  3. Step 3: Cross multiply
    118,913.75x = 164,100.98 × 68,612.75
  4. Step 4: Simplify right side
    118,913.75x = 11,259,419,515.50
  5. Step 5: Solve for x
    x = 11,259,419,515.50/118,913.75
  6. Step 6: Final answer
    x = 94,685.60

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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.