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Finding the Fourth Proportional to 126,666, 189,873.18 and 70,531.74

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Solution

The fourth proportional to 126,666, 189,873.18 and 70,531.74 is: 105,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,666 : 189,873.18 = 70,531.74 : x
  2. Step 2: Convert to fraction form
    126,666/189,873.18 = 70,531.74/x
  3. Step 3: Cross multiply
    126,666x = 189,873.18 × 70,531.74
  4. Step 4: Simplify right side
    126,666x = 13,392,085,764.73
  5. Step 5: Solve for x
    x = 13,392,085,764.73/126,666
  6. Step 6: Final answer
    x = 105,727.55

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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.