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Finding the Fourth Proportional to 126,006.80, 188,815.80 and 109,288.40

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Solution

The fourth proportional to 126,006.80, 188,815.80 and 109,288.40 is: 163,763.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,006.80 : 188,815.80 = 109,288.40 : x
  2. Step 2: Convert to fraction form
    126,006.80/188,815.80 = 109,288.40/x
  3. Step 3: Cross multiply
    126,006.80x = 188,815.80 × 109,288.40
  4. Step 4: Simplify right side
    126,006.80x = 20,635,376,676.72
  5. Step 5: Solve for x
    x = 20,635,376,676.72/126,006.80
  6. Step 6: Final answer
    x = 163,763.99

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1.5x scale

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.