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Finding the Fourth Proportional to 197,190.80, 295,348.80 and 78,801.20

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Solution

The fourth proportional to 197,190.80, 295,348.80 and 78,801.20 is: 118,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,190.80 : 295,348.80 = 78,801.20 : x
  2. Step 2: Convert to fraction form
    197,190.80/295,348.80 = 78,801.20/x
  3. Step 3: Cross multiply
    197,190.80x = 295,348.80 × 78,801.20
  4. Step 4: Simplify right side
    197,190.80x = 23,273,839,858.56
  5. Step 5: Solve for x
    x = 23,273,839,858.56/197,190.80
  6. Step 6: Final answer
    x = 118,027.01

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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.