Finding the Fourth Proportional to 163,902.80, 245,821.80 and 79,662.80
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Solution
The fourth proportional to 163,902.80, 245,821.80 and 79,662.80 is: 119,478.45
Step by Step Solution
- Step 1: Write the proportion equation
163,902.80 : 245,821.80 = 79,662.80 : x - Step 2: Convert to fraction form
163,902.80/245,821.80 = 79,662.80/x - Step 3: Cross multiply
163,902.80x = 245,821.80 × 79,662.80 - Step 4: Simplify right side
163,902.80x = 19,582,852,889.04 - Step 5: Solve for x
x = 19,582,852,889.04/163,902.80 - Step 6: Final answer
x = 119,478.45
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1.5x scale
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.