Finding the Fourth Proportional to 186,636.75, 280,020.73 and 81,442.05
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Solution
The fourth proportional to 186,636.75, 280,020.73 and 81,442.05 is: 122,191.70
Step by Step Solution
- Step 1: Write the proportion equation
186,636.75 : 280,020.73 = 81,442.05 : x - Step 2: Convert to fraction form
186,636.75/280,020.73 = 81,442.05/x - Step 3: Cross multiply
186,636.75x = 280,020.73 × 81,442.05 - Step 4: Simplify right side
186,636.75x = 22,805,462,293.70 - Step 5: Solve for x
x = 22,805,462,293.70/186,636.75 - Step 6: Final answer
x = 122,191.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.