Home / 121,795,321.74-168,077,364.15-66,040,640.83

Finding the Fourth Proportional to 121,795,321.74, 168,077,364.15 and 66,040,640.83

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Solution

The fourth proportional to 121,795,321.74, 168,077,364.15 and 66,040,640.83 is: 91,135,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,795,321.74 : 168,077,364.15 = 66,040,640.83 : x
  2. Step 2: Convert to fraction form
    121,795,321.74/168,077,364.15 = 66,040,640.83/x
  3. Step 3: Cross multiply
    121,795,321.74x = 168,077,364.15 × 66,040,640.83
  4. Step 4: Simplify right side
    121,795,321.74x = 11,099,936,837,483,268
  5. Step 5: Solve for x
    x = 11,099,936,837,483,268/121,795,321.74
  6. Step 6: Final answer
    x = 91,135,986.83

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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.