Finding the Fourth Proportional to 117,194.79, 161,684.19 and 86,641.29
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Solution
The fourth proportional to 117,194.79, 161,684.19 and 86,641.29 is: 119,531.99
Step by Step Solution
- Step 1: Write the proportion equation
117,194.79 : 161,684.19 = 86,641.29 : x - Step 2: Convert to fraction form
117,194.79/161,684.19 = 86,641.29/x - Step 3: Cross multiply
117,194.79x = 161,684.19 × 86,641.29 - Step 4: Simplify right side
117,194.79x = 14,008,526,794.21 - Step 5: Solve for x
x = 14,008,526,794.21/117,194.79 - Step 6: Final answer
x = 119,531.99
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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.