Finding the Fourth Proportional to 121,996.80, 182,995.20 and 102,751.20
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Solution
The fourth proportional to 121,996.80, 182,995.20 and 102,751.20 is: 154,126.80
Step by Step Solution
- Step 1: Write the proportion equation
121,996.80 : 182,995.20 = 102,751.20 : x - Step 2: Convert to fraction form
121,996.80/182,995.20 = 102,751.20/x - Step 3: Cross multiply
121,996.80x = 182,995.20 × 102,751.20 - Step 4: Simplify right side
121,996.80x = 18,802,976,394.24 - Step 5: Solve for x
x = 18,802,976,394.24/121,996.80 - Step 6: Final answer
x = 154,126.80
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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.