Finding the Fourth Proportional to 135,891.78, 203,862.15 and 55,915.62
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Solution
The fourth proportional to 135,891.78, 203,862.15 and 55,915.62 is: 83,883.50
Step by Step Solution
- Step 1: Write the proportion equation
135,891.78 : 203,862.15 = 55,915.62 : x - Step 2: Convert to fraction form
135,891.78/203,862.15 = 55,915.62/x - Step 3: Cross multiply
135,891.78x = 203,862.15 × 55,915.62 - Step 4: Simplify right side
135,891.78x = 11,399,078,511.78 - Step 5: Solve for x
x = 11,399,078,511.78/135,891.78 - Step 6: Final answer
x = 83,883.50
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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.