Finding the Fourth Proportional to 121,563.28, 182,409.17 and 86,252.81
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Solution
The fourth proportional to 121,563.28, 182,409.17 and 86,252.81 is: 129,424.79
Step by Step Solution
- Step 1: Write the proportion equation
121,563.28 : 182,409.17 = 86,252.81 : x - Step 2: Convert to fraction form
121,563.28/182,409.17 = 86,252.81/x - Step 3: Cross multiply
121,563.28x = 182,409.17 × 86,252.81 - Step 4: Simplify right side
121,563.28x = 15,733,302,138.96 - Step 5: Solve for x
x = 15,733,302,138.96/121,563.28 - Step 6: Final answer
x = 129,424.79
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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.