Finding the Fourth Proportional to 139,417.25, 192,396.97 and 75,755.05
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Solution
The fourth proportional to 139,417.25, 192,396.97 and 75,755.05 is: 104,542.60
Step by Step Solution
- Step 1: Write the proportion equation
139,417.25 : 192,396.97 = 75,755.05 : x - Step 2: Convert to fraction form
139,417.25/192,396.97 = 75,755.05/x - Step 3: Cross multiply
139,417.25x = 192,396.97 × 75,755.05 - Step 4: Simplify right side
139,417.25x = 14,575,041,695.90 - Step 5: Solve for x
x = 14,575,041,695.90/139,417.25 - Step 6: Final answer
x = 104,542.60
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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.