Finding the Fourth Proportional to 117,136.28, 161,630.62 and 66,147.99
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Solution
The fourth proportional to 117,136.28, 161,630.62 and 66,147.99 is: 91,274.38
Step by Step Solution
- Step 1: Write the proportion equation
117,136.28 : 161,630.62 = 66,147.99 : x - Step 2: Convert to fraction form
117,136.28/161,630.62 = 66,147.99/x - Step 3: Cross multiply
117,136.28x = 161,630.62 × 66,147.99 - Step 4: Simplify right side
117,136.28x = 10,691,541,156.75 - Step 5: Solve for x
x = 10,691,541,156.75/117,136.28 - Step 6: Final answer
x = 91,274.38
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.