Finding the Fourth Proportional to 163,271.36, 225,316.68 and 90,678.94
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Solution
The fourth proportional to 163,271.36, 225,316.68 and 90,678.94 is: 125,138.17
Step by Step Solution
- Step 1: Write the proportion equation
163,271.36 : 225,316.68 = 90,678.94 : x - Step 2: Convert to fraction form
163,271.36/225,316.68 = 90,678.94/x - Step 3: Cross multiply
163,271.36x = 225,316.68 × 90,678.94 - Step 4: Simplify right side
163,271.36x = 20,431,478,517.10 - Step 5: Solve for x
x = 20,431,478,517.10/163,271.36 - Step 6: Final answer
x = 125,138.17
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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.