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Finding the Fourth Proportional to 188,269.62, 259,813.90 and 103,388.52

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Solution

The fourth proportional to 188,269.62, 259,813.90 and 103,388.52 is: 142,677.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,269.62 : 259,813.90 = 103,388.52 : x
  2. Step 2: Convert to fraction form
    188,269.62/259,813.90 = 103,388.52/x
  3. Step 3: Cross multiply
    188,269.62x = 259,813.90 × 103,388.52
  4. Step 4: Simplify right side
    188,269.62x = 26,861,774,596.43
  5. Step 5: Solve for x
    x = 26,861,774,596.43/188,269.62
  6. Step 6: Final answer
    x = 142,677.16

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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.