Finding the Fourth Proportional to 207,921.08, 311,747.53 and 81,574.09
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Solution
The fourth proportional to 207,921.08, 311,747.53 and 81,574.09 is: 122,308.53
Step by Step Solution
- Step 1: Write the proportion equation
207,921.08 : 311,747.53 = 81,574.09 : x - Step 2: Convert to fraction form
207,921.08/311,747.53 = 81,574.09/x - Step 3: Cross multiply
207,921.08x = 311,747.53 × 81,574.09 - Step 4: Simplify right side
207,921.08x = 25,430,522,234.00 - Step 5: Solve for x
x = 25,430,522,234.00/207,921.08 - Step 6: Final answer
x = 122,308.53
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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.