Finding the Fourth Proportional to 139,195.95, 192,094.68 and 81,824.75
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Solution
The fourth proportional to 139,195.95, 192,094.68 and 81,824.75 is: 112,920.65
Step by Step Solution
- Step 1: Write the proportion equation
139,195.95 : 192,094.68 = 81,824.75 : x - Step 2: Convert to fraction form
139,195.95/192,094.68 = 81,824.75/x - Step 3: Cross multiply
139,195.95x = 192,094.68 × 81,824.75 - Step 4: Simplify right side
139,195.95x = 15,718,097,797.73 - Step 5: Solve for x
x = 15,718,097,797.73/139,195.95 - Step 6: Final answer
x = 112,920.65
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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.