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Finding the Fourth Proportional to 188,504.50, 260,129.62 and 103,620.95

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Solution

The fourth proportional to 188,504.50, 260,129.62 and 103,620.95 is: 142,993.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,504.50 : 260,129.62 = 103,620.95 : x
  2. Step 2: Convert to fraction form
    188,504.50/260,129.62 = 103,620.95/x
  3. Step 3: Cross multiply
    188,504.50x = 260,129.62 × 103,620.95
  4. Step 4: Simplify right side
    188,504.50x = 26,954,879,127.39
  5. Step 5: Solve for x
    x = 26,954,879,127.39/188,504.50
  6. Step 6: Final answer
    x = 142,993.29

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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.