Finding the Fourth Proportional to 138,084.11, 207,128.73 and 43,312.19
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Solution
The fourth proportional to 138,084.11, 207,128.73 and 43,312.19 is: 64,969.09
Step by Step Solution
- Step 1: Write the proportion equation
138,084.11 : 207,128.73 = 43,312.19 : x - Step 2: Convert to fraction form
138,084.11/207,128.73 = 43,312.19/x - Step 3: Cross multiply
138,084.11x = 207,128.73 × 43,312.19 - Step 4: Simplify right side
138,084.11x = 8,971,198,908.22 - Step 5: Solve for x
x = 8,971,198,908.22/138,084.11 - Step 6: Final answer
x = 64,969.09
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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.