Home / 158,645.55-218,928.82-90,661.75

Finding the Fourth Proportional to 158,645.55, 218,928.82 and 90,661.75

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Solution

The fourth proportional to 158,645.55, 218,928.82 and 90,661.75 is: 125,112.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,645.55 : 218,928.82 = 90,661.75 : x
  2. Step 2: Convert to fraction form
    158,645.55/218,928.82 = 90,661.75/x
  3. Step 3: Cross multiply
    158,645.55x = 218,928.82 × 90,661.75
  4. Step 4: Simplify right side
    158,645.55x = 19,848,469,946.64
  5. Step 5: Solve for x
    x = 19,848,469,946.64/158,645.55
  6. Step 6: Final answer
    x = 125,112.05

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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.