Finding the Fourth Proportional to 139,507.75, 192,449.71 and 91,137.99
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Solution
The fourth proportional to 139,507.75, 192,449.71 and 91,137.99 is: 125,724.06
Step by Step Solution
- Step 1: Write the proportion equation
139,507.75 : 192,449.71 = 91,137.99 : x - Step 2: Convert to fraction form
139,507.75/192,449.71 = 91,137.99/x - Step 3: Cross multiply
139,507.75x = 192,449.71 × 91,137.99 - Step 4: Simplify right side
139,507.75x = 17,539,479,859.41 - Step 5: Solve for x
x = 17,539,479,859.41/139,507.75 - Step 6: Final answer
x = 125,724.06
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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.