Home / 126,046.20-189,069.30-121,769.40

Finding the Fourth Proportional to 126,046.20, 189,069.30 and 121,769.40

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Solution

The fourth proportional to 126,046.20, 189,069.30 and 121,769.40 is: 182,654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,046.20 : 189,069.30 = 121,769.40 : x
  2. Step 2: Convert to fraction form
    126,046.20/189,069.30 = 121,769.40/x
  3. Step 3: Cross multiply
    126,046.20x = 189,069.30 × 121,769.40
  4. Step 4: Simplify right side
    126,046.20x = 23,022,855,219.42
  5. Step 5: Solve for x
    x = 23,022,855,219.42/126,046.20
  6. Step 6: Final answer
    x = 182,654.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.