Finding the Fourth Proportional to 139,854.36, 192,999.27 and 79,424.99
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Solution
The fourth proportional to 139,854.36, 192,999.27 and 79,424.99 is: 109,606.63
Step by Step Solution
- Step 1: Write the proportion equation
139,854.36 : 192,999.27 = 79,424.99 : x - Step 2: Convert to fraction form
139,854.36/192,999.27 = 79,424.99/x - Step 3: Cross multiply
139,854.36x = 192,999.27 × 79,424.99 - Step 4: Simplify right side
139,854.36x = 15,328,965,625.49 - Step 5: Solve for x
x = 15,328,965,625.49/139,854.36 - Step 6: Final answer
x = 109,606.63
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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.