Finding the Fourth Proportional to 163,694.80, 245,311.80 and 121,243.60
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Solution
The fourth proportional to 163,694.80, 245,311.80 and 121,243.60 is: 181,694.75
Step by Step Solution
- Step 1: Write the proportion equation
163,694.80 : 245,311.80 = 121,243.60 : x - Step 2: Convert to fraction form
163,694.80/245,311.80 = 121,243.60/x - Step 3: Cross multiply
163,694.80x = 245,311.80 × 121,243.60 - Step 4: Simplify right side
163,694.80x = 29,742,485,754.48 - Step 5: Solve for x
x = 29,742,485,754.48/163,694.80 - Step 6: Final answer
x = 181,694.75
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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.