Home / 221,687.20-305,930.16-126,200.08

Finding the Fourth Proportional to 221,687.20, 305,930.16 and 126,200.08

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Solution

The fourth proportional to 221,687.20, 305,930.16 and 126,200.08 is: 174,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,687.20 : 305,930.16 = 126,200.08 : x
  2. Step 2: Convert to fraction form
    221,687.20/305,930.16 = 126,200.08/x
  3. Step 3: Cross multiply
    221,687.20x = 305,930.16 × 126,200.08
  4. Step 4: Simplify right side
    221,687.20x = 38,608,410,666.41
  5. Step 5: Solve for x
    x = 38,608,410,666.41/221,687.20
  6. Step 6: Final answer
    x = 174,157.15

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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.