Finding the Fourth Proportional to 138,609.08, 207,939.29 and 43,863.12
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Solution
The fourth proportional to 138,609.08, 207,939.29 and 43,863.12 is: 65,802.80
Step by Step Solution
- Step 1: Write the proportion equation
138,609.08 : 207,939.29 = 43,863.12 : x - Step 2: Convert to fraction form
138,609.08/207,939.29 = 43,863.12/x - Step 3: Cross multiply
138,609.08x = 207,939.29 × 43,863.12 - Step 4: Simplify right side
138,609.08x = 9,120,865,810.67 - Step 5: Solve for x
x = 9,120,865,810.67/138,609.08 - Step 6: Final answer
x = 65,802.80
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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.