Finding the Fourth Proportional to 154,383.18, 213,052.60 and 86,399.62
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Solution
The fourth proportional to 154,383.18, 213,052.60 and 86,399.62 is: 119,233.61
Step by Step Solution
- Step 1: Write the proportion equation
154,383.18 : 213,052.60 = 86,399.62 : x - Step 2: Convert to fraction form
154,383.18/213,052.60 = 86,399.62/x - Step 3: Cross multiply
154,383.18x = 213,052.60 × 86,399.62 - Step 4: Simplify right side
154,383.18x = 18,407,663,680.01 - Step 5: Solve for x
x = 18,407,663,680.01/154,383.18 - Step 6: Final answer
x = 119,233.61
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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.