Home / 220,172.78-303,898.23-129,557.88

Finding the Fourth Proportional to 220,172.78, 303,898.23 and 129,557.88

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Solution

The fourth proportional to 220,172.78, 303,898.23 and 129,557.88 is: 178,825.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,172.78 : 303,898.23 = 129,557.88 : x
  2. Step 2: Convert to fraction form
    220,172.78/303,898.23 = 129,557.88/x
  3. Step 3: Cross multiply
    220,172.78x = 303,898.23 × 129,557.88
  4. Step 4: Simplify right side
    220,172.78x = 39,372,410,414.55
  5. Step 5: Solve for x
    x = 39,372,410,414.55/220,172.78
  6. Step 6: Final answer
    x = 178,825.06

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1.5x scale

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.