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Finding the Fourth Proportional to 188,379.28, 259,954.54 and 103,494.52

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Solution

The fourth proportional to 188,379.28, 259,954.54 and 103,494.52 is: 142,817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,379.28 : 259,954.54 = 103,494.52 : x
  2. Step 2: Convert to fraction form
    188,379.28/259,954.54 = 103,494.52/x
  3. Step 3: Cross multiply
    188,379.28x = 259,954.54 × 103,494.52
  4. Step 4: Simplify right side
    188,379.28x = 26,903,870,339.12
  5. Step 5: Solve for x
    x = 26,903,870,339.12/188,379.28
  6. Step 6: Final answer
    x = 142,817.57

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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.