Finding the Fourth Proportional to 212,365.08, 318,464.39 and 79,172.68
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Solution
The fourth proportional to 212,365.08, 318,464.39 and 79,172.68 is: 118,727.99
Step by Step Solution
- Step 1: Write the proportion equation
212,365.08 : 318,464.39 = 79,172.68 : x - Step 2: Convert to fraction form
212,365.08/318,464.39 = 79,172.68/x - Step 3: Cross multiply
212,365.08x = 318,464.39 × 79,172.68 - Step 4: Simplify right side
212,365.08x = 25,213,679,240.87 - Step 5: Solve for x
x = 25,213,679,240.87/212,365.08 - Step 6: Final answer
x = 118,727.99
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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.