Finding the Fourth Proportional to 208,721.82, 313,128.09 and 68,475.18
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Solution
The fourth proportional to 208,721.82, 313,128.09 and 68,475.18 is: 102,727.65
Step by Step Solution
- Step 1: Write the proportion equation
208,721.82 : 313,128.09 = 68,475.18 : x - Step 2: Convert to fraction form
208,721.82/313,128.09 = 68,475.18/x - Step 3: Cross multiply
208,721.82x = 313,128.09 × 68,475.18 - Step 4: Simplify right side
208,721.82x = 21,441,502,325.81 - Step 5: Solve for x
x = 21,441,502,325.81/208,721.82 - Step 6: Final answer
x = 102,727.65
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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.