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Finding the Fourth Proportional to 188,173.96, 259,678.50 and 103,285.96

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Solution

The fourth proportional to 188,173.96, 259,678.50 and 103,285.96 is: 142,533.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,173.96 : 259,678.50 = 103,285.96 : x
  2. Step 2: Convert to fraction form
    188,173.96/259,678.50 = 103,285.96/x
  3. Step 3: Cross multiply
    188,173.96x = 259,678.50 × 103,285.96
  4. Step 4: Simplify right side
    188,173.96x = 26,821,143,163.86
  5. Step 5: Solve for x
    x = 26,821,143,163.86/188,173.96
  6. Step 6: Final answer
    x = 142,533.77

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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.