Finding the Fourth Proportional to 208,541.69, 312,602.21 and 82,133.09
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Solution
The fourth proportional to 208,541.69, 312,602.21 and 82,133.09 is: 123,116.79
Step by Step Solution
- Step 1: Write the proportion equation
208,541.69 : 312,602.21 = 82,133.09 : x - Step 2: Convert to fraction form
208,541.69/312,602.21 = 82,133.09/x - Step 3: Cross multiply
208,541.69x = 312,602.21 × 82,133.09 - Step 4: Simplify right side
208,541.69x = 25,674,983,474.45 - Step 5: Solve for x
x = 25,674,983,474.45/208,541.69 - Step 6: Final answer
x = 123,116.79
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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.