Finding the Fourth Proportional to 212,159.58, 318,239.37 and 99,769.92
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Solution
The fourth proportional to 212,159.58, 318,239.37 and 99,769.92 is: 149,654.88
Step by Step Solution
- Step 1: Write the proportion equation
212,159.58 : 318,239.37 = 99,769.92 : x - Step 2: Convert to fraction form
212,159.58/318,239.37 = 99,769.92/x - Step 3: Cross multiply
212,159.58x = 318,239.37 × 99,769.92 - Step 4: Simplify right side
212,159.58x = 31,750,716,485.75 - Step 5: Solve for x
x = 31,750,716,485.75/212,159.58 - Step 6: Final answer
x = 149,654.88
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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.