Finding the Fourth Proportional to 141,243.75, 194,933.70 and 81,627.75
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Solution
The fourth proportional to 141,243.75, 194,933.70 and 81,627.75 is: 112,656.31
Step by Step Solution
- Step 1: Write the proportion equation
141,243.75 : 194,933.70 = 81,627.75 : x - Step 2: Convert to fraction form
141,243.75/194,933.70 = 81,627.75/x - Step 3: Cross multiply
141,243.75x = 194,933.70 × 81,627.75 - Step 4: Simplify right side
141,243.75x = 15,911,999,330.18 - Step 5: Solve for x
x = 15,911,999,330.18/141,243.75 - Step 6: Final answer
x = 112,656.31
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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.