Finding the Fourth Proportional to 139,357.35, 192,392.94 and 91,749.09
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Solution
The fourth proportional to 139,357.35, 192,392.94 and 91,749.09 is: 126,666.28
Step by Step Solution
- Step 1: Write the proportion equation
139,357.35 : 192,392.94 = 91,749.09 : x - Step 2: Convert to fraction form
139,357.35/192,392.94 = 91,749.09/x - Step 3: Cross multiply
139,357.35x = 192,392.94 × 91,749.09 - Step 4: Simplify right side
139,357.35x = 17,651,877,716.87 - Step 5: Solve for x
x = 17,651,877,716.87/139,357.35 - Step 6: Final answer
x = 126,666.28
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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.