Finding the Fourth Proportional to 129,662.19, 194,358.42 and 54,719.78
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Solution
The fourth proportional to 129,662.19, 194,358.42 and 54,719.78 is: 82,022.75
Step by Step Solution
- Step 1: Write the proportion equation
129,662.19 : 194,358.42 = 54,719.78 : x - Step 2: Convert to fraction form
129,662.19/194,358.42 = 54,719.78/x - Step 3: Cross multiply
129,662.19x = 194,358.42 × 54,719.78 - Step 4: Simplify right side
129,662.19x = 10,635,249,011.76 - Step 5: Solve for x
x = 10,635,249,011.76/129,662.19 - Step 6: Final answer
x = 82,022.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.