Home / 221,172.56-305,217.44-120,570.56

Finding the Fourth Proportional to 221,172.56, 305,217.44 and 120,570.56

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Solution

The fourth proportional to 221,172.56, 305,217.44 and 120,570.56 is: 166,387.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,172.56 : 305,217.44 = 120,570.56 : x
  2. Step 2: Convert to fraction form
    221,172.56/305,217.44 = 120,570.56/x
  3. Step 3: Cross multiply
    221,172.56x = 305,217.44 × 120,570.56
  4. Step 4: Simplify right side
    221,172.56x = 36,800,237,662.57
  5. Step 5: Solve for x
    x = 36,800,237,662.57/221,172.56
  6. Step 6: Final answer
    x = 166,387.00

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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.