Finding the Fourth Proportional to 139,561.13, 192,588.49 and 79,135.84
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Solution
The fourth proportional to 139,561.13, 192,588.49 and 79,135.84 is: 109,204.12
Step by Step Solution
- Step 1: Write the proportion equation
139,561.13 : 192,588.49 = 79,135.84 : x - Step 2: Convert to fraction form
139,561.13/192,588.49 = 79,135.84/x - Step 3: Cross multiply
139,561.13x = 192,588.49 × 79,135.84 - Step 4: Simplify right side
139,561.13x = 15,240,650,741.69 - Step 5: Solve for x
x = 15,240,650,741.69/139,561.13 - Step 6: Final answer
x = 109,204.12
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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.