Finding the Fourth Proportional to 129,622.60, 194,433.90 and 98,129.80
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Solution
The fourth proportional to 129,622.60, 194,433.90 and 98,129.80 is: 147,194.70
Step by Step Solution
- Step 1: Write the proportion equation
129,622.60 : 194,433.90 = 98,129.80 : x - Step 2: Convert to fraction form
129,622.60/194,433.90 = 98,129.80/x - Step 3: Cross multiply
129,622.60x = 194,433.90 × 98,129.80 - Step 4: Simplify right side
129,622.60x = 19,079,759,720.22 - Step 5: Solve for x
x = 19,079,759,720.22/129,622.60 - Step 6: Final answer
x = 147,194.70
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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.