Finding the Fourth Proportional to 151,639.02, 209,194.18 and 87,939.90
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Solution
The fourth proportional to 151,639.02, 209,194.18 and 87,939.90 is: 121,317.82
Step by Step Solution
- Step 1: Write the proportion equation
151,639.02 : 209,194.18 = 87,939.90 : x - Step 2: Convert to fraction form
151,639.02/209,194.18 = 87,939.90/x - Step 3: Cross multiply
151,639.02x = 209,194.18 × 87,939.90 - Step 4: Simplify right side
151,639.02x = 18,396,515,269.78 - Step 5: Solve for x
x = 18,396,515,269.78/151,639.02 - Step 6: Final answer
x = 121,317.82
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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.