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Finding the Fourth Proportional to 188,813.10, 260,540.72 and 111,283.68

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Solution

The fourth proportional to 188,813.10, 260,540.72 and 111,283.68 is: 153,558.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,813.10 : 260,540.72 = 111,283.68 : x
  2. Step 2: Convert to fraction form
    188,813.10/260,540.72 = 111,283.68/x
  3. Step 3: Cross multiply
    188,813.10x = 260,540.72 × 111,283.68
  4. Step 4: Simplify right side
    188,813.10x = 28,993,929,555.03
  5. Step 5: Solve for x
    x = 28,993,929,555.03/188,813.10
  6. Step 6: Final answer
    x = 153,558.89

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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.