Finding the Fourth Proportional to 126,231.09, 174,214.32 and 72,515.99
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Solution
The fourth proportional to 126,231.09, 174,214.32 and 72,515.99 is: 100,080.92
Step by Step Solution
- Step 1: Write the proportion equation
126,231.09 : 174,214.32 = 72,515.99 : x - Step 2: Convert to fraction form
126,231.09/174,214.32 = 72,515.99/x - Step 3: Cross multiply
126,231.09x = 174,214.32 × 72,515.99 - Step 4: Simplify right side
126,231.09x = 12,633,323,015.91 - Step 5: Solve for x
x = 12,633,323,015.91/126,231.09 - Step 6: Final answer
x = 100,080.92
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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.