Finding the Fourth Proportional to 129,799.68, 194,720.08 and 54,920.38
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Solution
The fourth proportional to 129,799.68, 194,720.08 and 54,920.38 is: 82,389.27
Step by Step Solution
- Step 1: Write the proportion equation
129,799.68 : 194,720.08 = 54,920.38 : x - Step 2: Convert to fraction form
129,799.68/194,720.08 = 54,920.38/x - Step 3: Cross multiply
129,799.68x = 194,720.08 × 54,920.38 - Step 4: Simplify right side
129,799.68x = 10,694,100,787.23 - Step 5: Solve for x
x = 10,694,100,787.23/129,799.68 - Step 6: Final answer
x = 82,389.27
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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.