Finding the Fourth Proportional to 135,400.80, 202,712.40 and 82,912.80
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Solution
The fourth proportional to 135,400.80, 202,712.40 and 82,912.80 is: 124,131.12
Step by Step Solution
- Step 1: Write the proportion equation
135,400.80 : 202,712.40 = 82,912.80 : x - Step 2: Convert to fraction form
135,400.80/202,712.40 = 82,912.80/x - Step 3: Cross multiply
135,400.80x = 202,712.40 × 82,912.80 - Step 4: Simplify right side
135,400.80x = 16,807,452,678.72 - Step 5: Solve for x
x = 16,807,452,678.72/135,400.80 - Step 6: Final answer
x = 124,131.12
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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.