Finding the Fourth Proportional to 129,476.80, 194,221.60 and 67,268.80
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Solution
The fourth proportional to 129,476.80, 194,221.60 and 67,268.80 is: 100,906.53
Step by Step Solution
- Step 1: Write the proportion equation
129,476.80 : 194,221.60 = 67,268.80 : x - Step 2: Convert to fraction form
129,476.80/194,221.60 = 67,268.80/x - Step 3: Cross multiply
129,476.80x = 194,221.60 × 67,268.80 - Step 4: Simplify right side
129,476.80x = 13,065,053,966.08 - Step 5: Solve for x
x = 13,065,053,966.08/129,476.80 - Step 6: Final answer
x = 100,906.53
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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.