Finding the Fourth Proportional to 139,343.76, 192,291.21 and 75,680.19
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Solution
The fourth proportional to 139,343.76, 192,291.21 and 75,680.19 is: 104,436.94
Step by Step Solution
- Step 1: Write the proportion equation
139,343.76 : 192,291.21 = 75,680.19 : x - Step 2: Convert to fraction form
139,343.76/192,291.21 = 75,680.19/x - Step 3: Cross multiply
139,343.76x = 192,291.21 × 75,680.19 - Step 4: Simplify right side
139,343.76x = 14,552,635,308.13 - Step 5: Solve for x
x = 14,552,635,308.13/139,343.76 - Step 6: Final answer
x = 104,436.94
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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.