Finding the Fourth Proportional to 121,816.80, 182,725.20 and 102,571.20
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Solution
The fourth proportional to 121,816.80, 182,725.20 and 102,571.20 is: 153,856.80
Step by Step Solution
- Step 1: Write the proportion equation
121,816.80 : 182,725.20 = 102,571.20 : x - Step 2: Convert to fraction form
121,816.80/182,725.20 = 102,571.20/x - Step 3: Cross multiply
121,816.80x = 182,725.20 × 102,571.20 - Step 4: Simplify right side
121,816.80x = 18,742,343,034.24 - Step 5: Solve for x
x = 18,742,343,034.24/121,816.80 - Step 6: Final answer
x = 153,856.80
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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.