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Finding the Fourth Proportional to 188,280.78, 259,832.82 and 103,403.34

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Solution

The fourth proportional to 188,280.78, 259,832.82 and 103,403.34 is: 142,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,280.78 : 259,832.82 = 103,403.34 : x
  2. Step 2: Convert to fraction form
    188,280.78/259,832.82 = 103,403.34/x
  3. Step 3: Cross multiply
    188,280.78x = 259,832.82 × 103,403.34
  4. Step 4: Simplify right side
    188,280.78x = 26,867,581,429.62
  5. Step 5: Solve for x
    x = 26,867,581,429.62/188,280.78
  6. Step 6: Final answer
    x = 142,699.54

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1.5x scale

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.