Home / 221,467.98-305,621.55-120,866.70

Finding the Fourth Proportional to 221,467.98, 305,621.55 and 120,866.70

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Solution

The fourth proportional to 221,467.98, 305,621.55 and 120,866.70 is: 166,793.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,467.98 : 305,621.55 = 120,866.70 : x
  2. Step 2: Convert to fraction form
    221,467.98/305,621.55 = 120,866.70/x
  3. Step 3: Cross multiply
    221,467.98x = 305,621.55 × 120,866.70
  4. Step 4: Simplify right side
    221,467.98x = 36,939,468,197.39
  5. Step 5: Solve for x
    x = 36,939,468,197.39/221,467.98
  6. Step 6: Final answer
    x = 166,793.72

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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.