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Finding the Fourth Proportional to 151,135.75, 208,568.55 and 84,067.75

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Solution

The fourth proportional to 151,135.75, 208,568.55 and 84,067.75 is: 116,014.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,135.75 : 208,568.55 = 84,067.75 : x
  2. Step 2: Convert to fraction form
    151,135.75/208,568.55 = 84,067.75/x
  3. Step 3: Cross multiply
    151,135.75x = 208,568.55 × 84,067.75
  4. Step 4: Simplify right side
    151,135.75x = 17,533,888,719.26
  5. Step 5: Solve for x
    x = 17,533,888,719.26/151,135.75
  6. Step 6: Final answer
    x = 116,014.17

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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.