Finding the Fourth Proportional to 129,905.48, 179,296.26 and 76,218.68
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Solution
The fourth proportional to 129,905.48, 179,296.26 and 76,218.68 is: 105,197.44
Step by Step Solution
- Step 1: Write the proportion equation
129,905.48 : 179,296.26 = 76,218.68 : x - Step 2: Convert to fraction form
129,905.48/179,296.26 = 76,218.68/x - Step 3: Cross multiply
129,905.48x = 179,296.26 × 76,218.68 - Step 4: Simplify right side
129,905.48x = 13,665,724,266.14 - Step 5: Solve for x
x = 13,665,724,266.14/129,905.48 - Step 6: Final answer
x = 105,197.44
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.