Finding the Fourth Proportional to 126,106.89, 189,216.36 and 66,120.99
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Solution
The fourth proportional to 126,106.89, 189,216.36 and 66,120.99 is: 99,210.86
Step by Step Solution
- Step 1: Write the proportion equation
126,106.89 : 189,216.36 = 66,120.99 : x - Step 2: Convert to fraction form
126,106.89/189,216.36 = 66,120.99/x - Step 3: Cross multiply
126,106.89x = 189,216.36 × 66,120.99 - Step 4: Simplify right side
126,106.89x = 12,511,173,047.40 - Step 5: Solve for x
x = 12,511,173,047.40/126,106.89 - Step 6: Final answer
x = 99,210.86
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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.