Finding the Fourth Proportional to 86,968.26, 119,116.88 and 81,861.62
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Solution
The fourth proportional to 86,968.26, 119,116.88 and 81,861.62 is: 112,122.52
Step by Step Solution
- Step 1: Write the proportion equation
86,968.26 : 119,116.88 = 81,861.62 : x - Step 2: Convert to fraction form
86,968.26/119,116.88 = 81,861.62/x - Step 3: Cross multiply
86,968.26x = 119,116.88 × 81,861.62 - Step 4: Simplify right side
86,968.26x = 9,751,100,766.15 - Step 5: Solve for x
x = 9,751,100,766.15/86,968.26 - Step 6: Final answer
x = 112,122.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.