Finding the Fourth Proportional to 139,193.95, 192,091.92 and 81,822.75
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Solution
The fourth proportional to 139,193.95, 192,091.92 and 81,822.75 is: 112,917.90
Step by Step Solution
- Step 1: Write the proportion equation
139,193.95 : 192,091.92 = 81,822.75 : x - Step 2: Convert to fraction form
139,193.95/192,091.92 = 81,822.75/x - Step 3: Cross multiply
139,193.95x = 192,091.92 × 81,822.75 - Step 4: Simplify right side
139,193.95x = 15,717,488,120.00 - Step 5: Solve for x
x = 15,717,488,120.00/139,193.95 - Step 6: Final answer
x = 112,917.90
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1.5x scale
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.