Finding the Fourth Proportional to 129,672.59, 178,953.18 and 73,082.75
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Solution
The fourth proportional to 129,672.59, 178,953.18 and 73,082.75 is: 100,857.02
Step by Step Solution
- Step 1: Write the proportion equation
129,672.59 : 178,953.18 = 73,082.75 : x - Step 2: Convert to fraction form
129,672.59/178,953.18 = 73,082.75/x - Step 3: Cross multiply
129,672.59x = 178,953.18 × 73,082.75 - Step 4: Simplify right side
129,672.59x = 13,078,390,515.65 - Step 5: Solve for x
x = 13,078,390,515.65/129,672.59 - Step 6: Final answer
x = 100,857.02
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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.