Finding the Fourth Proportional to 128,751.18, 193,135.26 and 44,519.49
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Solution
The fourth proportional to 128,751.18, 193,135.26 and 44,519.49 is: 66,782.17
Step by Step Solution
- Step 1: Write the proportion equation
128,751.18 : 193,135.26 = 44,519.49 : x - Step 2: Convert to fraction form
128,751.18/193,135.26 = 44,519.49/x - Step 3: Cross multiply
128,751.18x = 193,135.26 × 44,519.49 - Step 4: Simplify right side
128,751.18x = 8,598,283,276.22 - Step 5: Solve for x
x = 8,598,283,276.22/128,751.18 - Step 6: Final answer
x = 66,782.17
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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.