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Finding the Fourth Proportional to 188,129.48, 259,610.01 and 103,247.96

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Solution

The fourth proportional to 188,129.48, 259,610.01 and 103,247.96 is: 142,477.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,129.48 : 259,610.01 = 103,247.96 : x
  2. Step 2: Convert to fraction form
    188,129.48/259,610.01 = 103,247.96/x
  3. Step 3: Cross multiply
    188,129.48x = 259,610.01 × 103,247.96
  4. Step 4: Simplify right side
    188,129.48x = 26,804,203,928.08
  5. Step 5: Solve for x
    x = 26,804,203,928.08/188,129.48
  6. Step 6: Final answer
    x = 142,477.43

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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.