Finding the Fourth Proportional to 212,836.21, 293,704.09 and 122,130.07
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Solution
The fourth proportional to 212,836.21, 293,704.09 and 122,130.07 is: 168,533.83
Step by Step Solution
- Step 1: Write the proportion equation
212,836.21 : 293,704.09 = 122,130.07 : x - Step 2: Convert to fraction form
212,836.21/293,704.09 = 122,130.07/x - Step 3: Cross multiply
212,836.21x = 293,704.09 × 122,130.07 - Step 4: Simplify right side
212,836.21x = 35,870,101,070.99 - Step 5: Solve for x
x = 35,870,101,070.99/212,836.21 - Step 6: Final answer
x = 168,533.83
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.