Finding the Fourth Proportional to 208,343.80, 312,537.66 and 68,102.20
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Solution
The fourth proportional to 208,343.80, 312,537.66 and 68,102.20 is: 102,160.47
Step by Step Solution
- Step 1: Write the proportion equation
208,343.80 : 312,537.66 = 68,102.20 : x - Step 2: Convert to fraction form
208,343.80/312,537.66 = 68,102.20/x - Step 3: Cross multiply
208,343.80x = 312,537.66 × 68,102.20 - Step 4: Simplify right side
208,343.80x = 21,284,500,325.65 - Step 5: Solve for x
x = 21,284,500,325.65/208,343.80 - Step 6: Final answer
x = 102,160.47
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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.