Finding the Fourth Proportional to 135,953.70, 203,930.55 and 100,961.70
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Solution
The fourth proportional to 135,953.70, 203,930.55 and 100,961.70 is: 151,442.55
Step by Step Solution
- Step 1: Write the proportion equation
135,953.70 : 203,930.55 = 100,961.70 : x - Step 2: Convert to fraction form
135,953.70/203,930.55 = 100,961.70/x - Step 3: Cross multiply
135,953.70x = 203,930.55 × 100,961.70 - Step 4: Simplify right side
135,953.70x = 20,589,175,009.94 - Step 5: Solve for x
x = 20,589,175,009.94/135,953.70 - Step 6: Final answer
x = 151,442.55
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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.