Finding the Fourth Proportional to 128,710.48, 193,018.36 and 44,449.20
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Solution
The fourth proportional to 128,710.48, 193,018.36 and 44,449.20 is: 66,657.44
Step by Step Solution
- Step 1: Write the proportion equation
128,710.48 : 193,018.36 = 44,449.20 : x - Step 2: Convert to fraction form
128,710.48/193,018.36 = 44,449.20/x - Step 3: Cross multiply
128,710.48x = 193,018.36 × 44,449.20 - Step 4: Simplify right side
128,710.48x = 8,579,511,687.31 - Step 5: Solve for x
x = 8,579,511,687.31/128,710.48 - Step 6: Final answer
x = 66,657.44
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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.