Home / 221,105.80-305,185.62-125,616.52

Finding the Fourth Proportional to 221,105.80, 305,185.62 and 125,616.52

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Solution

The fourth proportional to 221,105.80, 305,185.62 and 125,616.52 is: 173,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,105.80 : 305,185.62 = 125,616.52 : x
  2. Step 2: Convert to fraction form
    221,105.80/305,185.62 = 125,616.52/x
  3. Step 3: Cross multiply
    221,105.80x = 305,185.62 × 125,616.52
  4. Step 4: Simplify right side
    221,105.80x = 38,336,355,538.44
  5. Step 5: Solve for x
    x = 38,336,355,538.44/221,105.80
  6. Step 6: Final answer
    x = 173,384.67

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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.