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Finding the Fourth Proportional to 136,706, 188,661.58 and 80,135.60

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Solution

The fourth proportional to 136,706, 188,661.58 and 80,135.60 is: 110,591.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,706 : 188,661.58 = 80,135.60 : x
  2. Step 2: Convert to fraction form
    136,706/188,661.58 = 80,135.60/x
  3. Step 3: Cross multiply
    136,706x = 188,661.58 × 80,135.60
  4. Step 4: Simplify right side
    136,706x = 15,118,508,910.25
  5. Step 5: Solve for x
    x = 15,118,508,910.25/136,706
  6. Step 6: Final answer
    x = 110,591.41

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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.