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Finding the Fourth Proportional to 126,106.60, 189,233.50 and 69,993.80

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Solution

The fourth proportional to 126,106.60, 189,233.50 and 69,993.80 is: 105,031.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,106.60 : 189,233.50 = 69,993.80 : x
  2. Step 2: Convert to fraction form
    126,106.60/189,233.50 = 69,993.80/x
  3. Step 3: Cross multiply
    126,106.60x = 189,233.50 × 69,993.80
  4. Step 4: Simplify right side
    126,106.60x = 13,245,171,752.30
  5. Step 5: Solve for x
    x = 13,245,171,752.30/126,106.60
  6. Step 6: Final answer
    x = 105,031.55

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