Finding the Fourth Proportional to 121,728.40, 182,475.96 and 51,511.12
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Solution
The fourth proportional to 121,728.40, 182,475.96 and 51,511.12 is: 77,217.32
Step by Step Solution
- Step 1: Write the proportion equation
121,728.40 : 182,475.96 = 51,511.12 : x - Step 2: Convert to fraction form
121,728.40/182,475.96 = 51,511.12/x - Step 3: Cross multiply
121,728.40x = 182,475.96 × 51,511.12 - Step 4: Simplify right side
121,728.40x = 9,399,541,072.68 - Step 5: Solve for x
x = 9,399,541,072.68/121,728.40 - Step 6: Final answer
x = 77,217.32
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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.