Finding the Fourth Proportional to 139,313.94, 192,255.53 and 78,882.99
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Solution
The fourth proportional to 139,313.94, 192,255.53 and 78,882.99 is: 108,859.82
Step by Step Solution
- Step 1: Write the proportion equation
139,313.94 : 192,255.53 = 78,882.99 : x - Step 2: Convert to fraction form
139,313.94/192,255.53 = 78,882.99/x - Step 3: Cross multiply
139,313.94x = 192,255.53 × 78,882.99 - Step 4: Simplify right side
139,313.94x = 15,165,690,656.02 - Step 5: Solve for x
x = 15,165,690,656.02/139,313.94 - Step 6: Final answer
x = 108,859.82
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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.