Finding the Fourth Proportional to 141,725.95, 195,581.79 and 78,063.75
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Solution
The fourth proportional to 141,725.95, 195,581.79 and 78,063.75 is: 107,727.96
Step by Step Solution
- Step 1: Write the proportion equation
141,725.95 : 195,581.79 = 78,063.75 : x - Step 2: Convert to fraction form
141,725.95/195,581.79 = 78,063.75/x - Step 3: Cross multiply
141,725.95x = 195,581.79 × 78,063.75 - Step 4: Simplify right side
141,725.95x = 15,267,847,959.11 - Step 5: Solve for x
x = 15,267,847,959.11/141,725.95 - Step 6: Final answer
x = 107,727.96
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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.