Finding the Fourth Proportional to 138,636.10, 207,990.99 and 43,867.97
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Solution
The fourth proportional to 138,636.10, 207,990.99 and 43,867.97 is: 65,813.61
Step by Step Solution
- Step 1: Write the proportion equation
138,636.10 : 207,990.99 = 43,867.97 : x - Step 2: Convert to fraction form
138,636.10/207,990.99 = 43,867.97/x - Step 3: Cross multiply
138,636.10x = 207,990.99 × 43,867.97 - Step 4: Simplify right side
138,636.10x = 9,124,142,414.11 - Step 5: Solve for x
x = 9,124,142,414.11/138,636.10 - Step 6: Final answer
x = 65,813.61
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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.