Finding the Fourth Proportional to 129,252.96, 178,357.68 and 71,889.84
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Solution
The fourth proportional to 129,252.96, 178,357.68 and 71,889.84 is: 99,201.64
Step by Step Solution
- Step 1: Write the proportion equation
129,252.96 : 178,357.68 = 71,889.84 : x - Step 2: Convert to fraction form
129,252.96/178,357.68 = 71,889.84/x - Step 3: Cross multiply
129,252.96x = 178,357.68 × 71,889.84 - Step 4: Simplify right side
129,252.96x = 12,822,105,077.97 - Step 5: Solve for x
x = 12,822,105,077.97/129,252.96 - Step 6: Final answer
x = 99,201.64
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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.