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Finding the Fourth Proportional to 188,750.69, 260,468.61 and 108,120.86

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Solution

The fourth proportional to 188,750.69, 260,468.61 and 108,120.86 is: 149,202.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,750.69 : 260,468.61 = 108,120.86 : x
  2. Step 2: Convert to fraction form
    188,750.69/260,468.61 = 108,120.86/x
  3. Step 3: Cross multiply
    188,750.69x = 260,468.61 × 108,120.86
  4. Step 4: Simplify right side
    188,750.69x = 28,162,089,993.35
  5. Step 5: Solve for x
    x = 28,162,089,993.35/188,750.69
  6. Step 6: Final answer
    x = 149,202.58

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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.