Finding the Fourth Proportional to 128,855.23, 193,279.95 and 44,610.30
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Solution
The fourth proportional to 128,855.23, 193,279.95 and 44,610.30 is: 66,914.45
Step by Step Solution
- Step 1: Write the proportion equation
128,855.23 : 193,279.95 = 44,610.30 : x - Step 2: Convert to fraction form
128,855.23/193,279.95 = 44,610.30/x - Step 3: Cross multiply
128,855.23x = 193,279.95 × 44,610.30 - Step 4: Simplify right side
128,855.23x = 8,622,276,553.49 - Step 5: Solve for x
x = 8,622,276,553.49/128,855.23 - Step 6: Final answer
x = 66,914.45
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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.