Finding the Fourth Proportional to 117,064.09, 161,531.16 and 68,647.70
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Solution
The fourth proportional to 117,064.09, 161,531.16 and 68,647.70 is: 94,723.70
Step by Step Solution
- Step 1: Write the proportion equation
117,064.09 : 161,531.16 = 68,647.70 : x - Step 2: Convert to fraction form
117,064.09/161,531.16 = 68,647.70/x - Step 3: Cross multiply
117,064.09x = 161,531.16 × 68,647.70 - Step 4: Simplify right side
117,064.09x = 11,088,743,144.87 - Step 5: Solve for x
x = 11,088,743,144.87/117,064.09 - Step 6: Final answer
x = 94,723.70
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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.