Finding the Fourth Proportional to 155,616.12, 214,732.62 and 87,627.96
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Solution
The fourth proportional to 155,616.12, 214,732.62 and 87,627.96 is: 120,916.66
Step by Step Solution
- Step 1: Write the proportion equation
155,616.12 : 214,732.62 = 87,627.96 : x - Step 2: Convert to fraction form
155,616.12/214,732.62 = 87,627.96/x - Step 3: Cross multiply
155,616.12x = 214,732.62 × 87,627.96 - Step 4: Simplify right side
155,616.12x = 18,816,581,436.06 - Step 5: Solve for x
x = 18,816,581,436.06/155,616.12 - Step 6: Final answer
x = 120,916.66
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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.