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Finding the Fourth Proportional to 126,763.58, 189,871.99 and 119,310.94

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Solution

The fourth proportional to 126,763.58, 189,871.99 and 119,310.94 is: 178,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,763.58 : 189,871.99 = 119,310.94 : x
  2. Step 2: Convert to fraction form
    126,763.58/189,871.99 = 119,310.94/x
  3. Step 3: Cross multiply
    126,763.58x = 189,871.99 × 119,310.94
  4. Step 4: Simplify right side
    126,763.58x = 22,653,805,606.57
  5. Step 5: Solve for x
    x = 22,653,805,606.57/126,763.58
  6. Step 6: Final answer
    x = 178,709.10

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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.