Finding the Fourth Proportional to 135,422.80, 202,939.80 and 99,604.60
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Solution
The fourth proportional to 135,422.80, 202,939.80 and 99,604.60 is: 149,263.92
Step by Step Solution
- Step 1: Write the proportion equation
135,422.80 : 202,939.80 = 99,604.60 : x - Step 2: Convert to fraction form
135,422.80/202,939.80 = 99,604.60/x - Step 3: Cross multiply
135,422.80x = 202,939.80 × 99,604.60 - Step 4: Simplify right side
135,422.80x = 20,213,737,603.08 - Step 5: Solve for x
x = 20,213,737,603.08/135,422.80 - Step 6: Final answer
x = 149,263.92
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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.