Finding the Fourth Proportional to 129,613.75, 194,420.64 and 31,117.75
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Solution
The fourth proportional to 129,613.75, 194,420.64 and 31,117.75 is: 46,676.63
Step by Step Solution
- Step 1: Write the proportion equation
129,613.75 : 194,420.64 = 31,117.75 : x - Step 2: Convert to fraction form
129,613.75/194,420.64 = 31,117.75/x - Step 3: Cross multiply
129,613.75x = 194,420.64 × 31,117.75 - Step 4: Simplify right side
129,613.75x = 6,049,932,870.36 - Step 5: Solve for x
x = 6,049,932,870.36/129,613.75 - Step 6: Final answer
x = 46,676.63
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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.