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Finding the Fourth Proportional to 197,139.60, 295,751.52 and 72,480.60

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Solution

The fourth proportional to 197,139.60, 295,751.52 and 72,480.60 is: 108,736.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,139.60 : 295,751.52 = 72,480.60 : x
  2. Step 2: Convert to fraction form
    197,139.60/295,751.52 = 72,480.60/x
  3. Step 3: Cross multiply
    197,139.60x = 295,751.52 × 72,480.60
  4. Step 4: Simplify right side
    197,139.60x = 21,436,247,620.51
  5. Step 5: Solve for x
    x = 21,436,247,620.51/197,139.60
  6. Step 6: Final answer
    x = 108,736.39

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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.