Finding the Fourth Proportional to 189,775.09, 261,785.98 and 121,716.34
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Solution
The fourth proportional to 189,775.09, 261,785.98 and 121,716.34 is: 167,902.07
Step by Step Solution
- Step 1: Write the proportion equation
189,775.09 : 261,785.98 = 121,716.34 : x - Step 2: Convert to fraction form
189,775.09/261,785.98 = 121,716.34/x - Step 3: Cross multiply
189,775.09x = 261,785.98 × 121,716.34 - Step 4: Simplify right side
189,775.09x = 31,863,631,348.91 - Step 5: Solve for x
x = 31,863,631,348.91/189,775.09 - Step 6: Final answer
x = 167,902.07
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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.