Finding the Fourth Proportional to 129,282.24, 178,393.44 and 74,843.68
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Solution
The fourth proportional to 129,282.24, 178,393.44 and 74,843.68 is: 103,274.99
Step by Step Solution
- Step 1: Write the proportion equation
129,282.24 : 178,393.44 = 74,843.68 : x - Step 2: Convert to fraction form
129,282.24/178,393.44 = 74,843.68/x - Step 3: Cross multiply
129,282.24x = 178,393.44 × 74,843.68 - Step 4: Simplify right side
129,282.24x = 13,351,621,537.46 - Step 5: Solve for x
x = 13,351,621,537.46/129,282.24 - Step 6: Final answer
x = 103,274.99
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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.