Finding the Fourth Proportional to 158,346.09, 218,513.42 and 90,361.84
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Solution
The fourth proportional to 158,346.09, 218,513.42 and 90,361.84 is: 124,696.95
Step by Step Solution
- Step 1: Write the proportion equation
158,346.09 : 218,513.42 = 90,361.84 : x - Step 2: Convert to fraction form
158,346.09/218,513.42 = 90,361.84/x - Step 3: Cross multiply
158,346.09x = 218,513.42 × 90,361.84 - Step 4: Simplify right side
158,346.09x = 19,745,274,244.08 - Step 5: Solve for x
x = 19,745,274,244.08/158,346.09 - Step 6: Final answer
x = 124,696.95
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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.