Finding the Fourth Proportional to 135,319.70, 202,979.55 and 131,431.70
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Solution
The fourth proportional to 135,319.70, 202,979.55 and 131,431.70 is: 197,147.55
Step by Step Solution
- Step 1: Write the proportion equation
135,319.70 : 202,979.55 = 131,431.70 : x - Step 2: Convert to fraction form
135,319.70/202,979.55 = 131,431.70/x - Step 3: Cross multiply
135,319.70x = 202,979.55 × 131,431.70 - Step 4: Simplify right side
135,319.70x = 26,677,947,321.74 - Step 5: Solve for x
x = 26,677,947,321.74/135,319.70 - Step 6: Final answer
x = 197,147.55
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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.