Finding the Fourth Proportional to 135,794.40, 203,691.42 and 76,603.20
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Solution
The fourth proportional to 135,794.40, 203,691.42 and 76,603.20 is: 114,904.70
Step by Step Solution
- Step 1: Write the proportion equation
135,794.40 : 203,691.42 = 76,603.20 : x - Step 2: Convert to fraction form
135,794.40/203,691.42 = 76,603.20/x - Step 3: Cross multiply
135,794.40x = 203,691.42 × 76,603.20 - Step 4: Simplify right side
135,794.40x = 15,603,414,584.54 - Step 5: Solve for x
x = 15,603,414,584.54/135,794.40 - Step 6: Final answer
x = 114,904.70
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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.