Finding the Fourth Proportional to 139,493.75, 192,497.16 and 82,119.88
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Solution
The fourth proportional to 139,493.75, 192,497.16 and 82,119.88 is: 113,322.95
Step by Step Solution
- Step 1: Write the proportion equation
139,493.75 : 192,497.16 = 82,119.88 : x - Step 2: Convert to fraction form
139,493.75/192,497.16 = 82,119.88/x - Step 3: Cross multiply
139,493.75x = 192,497.16 × 82,119.88 - Step 4: Simplify right side
139,493.75x = 15,807,842,683.39 - Step 5: Solve for x
x = 15,807,842,683.39/139,493.75 - Step 6: Final answer
x = 113,322.95
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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.