Finding the Fourth Proportional to 154,916.25, 213,751.49 and 91,230.81
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Solution
The fourth proportional to 154,916.25, 213,751.49 and 91,230.81 is: 125,879.12
Step by Step Solution
- Step 1: Write the proportion equation
154,916.25 : 213,751.49 = 91,230.81 : x - Step 2: Convert to fraction form
154,916.25/213,751.49 = 91,230.81/x - Step 3: Cross multiply
154,916.25x = 213,751.49 × 91,230.81 - Step 4: Simplify right side
154,916.25x = 19,500,721,115.25 - Step 5: Solve for x
x = 19,500,721,115.25/154,916.25 - Step 6: Final answer
x = 125,879.12
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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.