Finding the Fourth Proportional to 139,286.44, 192,209.94 and 75,622.84
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Solution
The fourth proportional to 139,286.44, 192,209.94 and 75,622.84 is: 104,356.62
Step by Step Solution
- Step 1: Write the proportion equation
139,286.44 : 192,209.94 = 75,622.84 : x - Step 2: Convert to fraction form
139,286.44/192,209.94 = 75,622.84/x - Step 3: Cross multiply
139,286.44x = 192,209.94 × 75,622.84 - Step 4: Simplify right side
139,286.44x = 14,535,461,539.03 - Step 5: Solve for x
x = 14,535,461,539.03/139,286.44 - Step 6: Final answer
x = 104,356.62
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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.