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Finding the Fourth Proportional to 188,504.10, 260,129.05 and 103,620.55

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Solution

The fourth proportional to 188,504.10, 260,129.05 and 103,620.55 is: 142,992.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,504.10 : 260,129.05 = 103,620.55 : x
  2. Step 2: Convert to fraction form
    188,504.10/260,129.05 = 103,620.55/x
  3. Step 3: Cross multiply
    188,504.10x = 260,129.05 × 103,620.55
  4. Step 4: Simplify right side
    188,504.10x = 26,954,715,231.98
  5. Step 5: Solve for x
    x = 26,954,715,231.98/188,504.10
  6. Step 6: Final answer
    x = 142,992.73

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1.5x scale

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.