Home / 115,911.82-159,933.72-68,147.74

Finding the Fourth Proportional to 115,911.82, 159,933.72 and 68,147.74

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Solution

The fourth proportional to 115,911.82, 159,933.72 and 68,147.74 is: 94,029.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,911.82 : 159,933.72 = 68,147.74 : x
  2. Step 2: Convert to fraction form
    115,911.82/159,933.72 = 68,147.74/x
  3. Step 3: Cross multiply
    115,911.82x = 159,933.72 × 68,147.74
  4. Step 4: Simplify right side
    115,911.82x = 10,899,121,567.79
  5. Step 5: Solve for x
    x = 10,899,121,567.79/115,911.82
  6. Step 6: Final answer
    x = 94,029.42

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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.