Finding the Fourth Proportional to 151,240.84, 208,717.76 and 86,720.09
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Solution
The fourth proportional to 151,240.84, 208,717.76 and 86,720.09 is: 119,676.82
Step by Step Solution
- Step 1: Write the proportion equation
151,240.84 : 208,717.76 = 86,720.09 : x - Step 2: Convert to fraction form
151,240.84/208,717.76 = 86,720.09/x - Step 3: Cross multiply
151,240.84x = 208,717.76 × 86,720.09 - Step 4: Simplify right side
151,240.84x = 18,100,022,105.01 - Step 5: Solve for x
x = 18,100,022,105.01/151,240.84 - Step 6: Final answer
x = 119,676.82
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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.