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Finding the Fourth Proportional to 151,361.82, 208,879.35 and 87,736.52

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Solution

The fourth proportional to 151,361.82, 208,879.35 and 87,736.52 is: 121,076.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,361.82 : 208,879.35 = 87,736.52 : x
  2. Step 2: Convert to fraction form
    151,361.82/208,879.35 = 87,736.52/x
  3. Step 3: Cross multiply
    151,361.82x = 208,879.35 × 87,736.52
  4. Step 4: Simplify right side
    151,361.82x = 18,326,346,224.47
  5. Step 5: Solve for x
    x = 18,326,346,224.47/151,361.82
  6. Step 6: Final answer
    x = 121,076.41

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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.