Finding the Fourth Proportional to 126,539.74, 189,771.26 and 66,535.88
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Solution
The fourth proportional to 126,539.74, 189,771.26 and 66,535.88 is: 99,783.66
Step by Step Solution
- Step 1: Write the proportion equation
126,539.74 : 189,771.26 = 66,535.88 : x - Step 2: Convert to fraction form
126,539.74/189,771.26 = 66,535.88/x - Step 3: Cross multiply
126,539.74x = 189,771.26 × 66,535.88 - Step 4: Simplify right side
126,539.74x = 12,626,598,423.58 - Step 5: Solve for x
x = 12,626,598,423.58/126,539.74 - Step 6: Final answer
x = 99,783.66
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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.