Finding the Fourth Proportional to 129,453.68, 178,339.77 and 123,474.66
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Solution
The fourth proportional to 129,453.68, 178,339.77 and 123,474.66 is: 170,102.88
Step by Step Solution
- Step 1: Write the proportion equation
129,453.68 : 178,339.77 = 123,474.66 : x - Step 2: Convert to fraction form
129,453.68/178,339.77 = 123,474.66/x - Step 3: Cross multiply
129,453.68x = 178,339.77 × 123,474.66 - Step 4: Simplify right side
129,453.68x = 22,020,442,465.23 - Step 5: Solve for x
x = 22,020,442,465.23/129,453.68 - Step 6: Final answer
x = 170,102.88
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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.