Finding the Fourth Proportional to 97,928.75, 135,183.02 and 66,140.70
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Solution
The fourth proportional to 97,928.75, 135,183.02 and 66,140.70 is: 91,302.09
Step by Step Solution
- Step 1: Write the proportion equation
97,928.75 : 135,183.02 = 66,140.70 : x - Step 2: Convert to fraction form
97,928.75/135,183.02 = 66,140.70/x - Step 3: Cross multiply
97,928.75x = 135,183.02 × 66,140.70 - Step 4: Simplify right side
97,928.75x = 8,941,099,570.91 - Step 5: Solve for x
x = 8,941,099,570.91/97,928.75 - Step 6: Final answer
x = 91,302.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.