Finding the Fourth Proportional to 140,021.74, 209,139.77 and 126,674.08
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Solution
The fourth proportional to 140,021.74, 209,139.77 and 126,674.08 is: 189,203.39
Step by Step Solution
- Step 1: Write the proportion equation
140,021.74 : 209,139.77 = 126,674.08 : x - Step 2: Convert to fraction form
140,021.74/209,139.77 = 126,674.08/x - Step 3: Cross multiply
140,021.74x = 209,139.77 × 126,674.08 - Step 4: Simplify right side
140,021.74x = 26,492,587,956.16 - Step 5: Solve for x
x = 26,492,587,956.16/140,021.74 - Step 6: Final answer
x = 189,203.39
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.