Finding the Fourth Proportional to 136,603.80, 204,905.70 and 128,293.20
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Solution
The fourth proportional to 136,603.80, 204,905.70 and 128,293.20 is: 192,439.80
Step by Step Solution
- Step 1: Write the proportion equation
136,603.80 : 204,905.70 = 128,293.20 : x - Step 2: Convert to fraction form
136,603.80/204,905.70 = 128,293.20/x - Step 3: Cross multiply
136,603.80x = 204,905.70 × 128,293.20 - Step 4: Simplify right side
136,603.80x = 26,288,007,951.24 - Step 5: Solve for x
x = 26,288,007,951.24/136,603.80 - Step 6: Final answer
x = 192,439.80
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1.5x scale
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.