Finding the Fourth Proportional to 212,764.36, 319,161.66 and 86,343.88
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Solution
The fourth proportional to 212,764.36, 319,161.66 and 86,343.88 is: 129,521.96
Step by Step Solution
- Step 1: Write the proportion equation
212,764.36 : 319,161.66 = 86,343.88 : x - Step 2: Convert to fraction form
212,764.36/319,161.66 = 86,343.88/x - Step 3: Cross multiply
212,764.36x = 319,161.66 × 86,343.88 - Step 4: Simplify right side
212,764.36x = 27,557,656,071.64 - Step 5: Solve for x
x = 27,557,656,071.64/212,764.36 - Step 6: Final answer
x = 129,521.96
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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.