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Finding the Fourth Proportional to 188,056.60, 281,905.10 and 69,696.20

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Solution

The fourth proportional to 188,056.60, 281,905.10 and 69,696.20 is: 104,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,056.60 : 281,905.10 = 69,696.20 : x
  2. Step 2: Convert to fraction form
    188,056.60/281,905.10 = 69,696.20/x
  3. Step 3: Cross multiply
    188,056.60x = 281,905.10 × 69,696.20
  4. Step 4: Simplify right side
    188,056.60x = 19,647,714,230.62
  5. Step 5: Solve for x
    x = 19,647,714,230.62/188,056.60
  6. Step 6: Final answer
    x = 104,477.66

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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.