Finding the Fourth Proportional to 190,921.14, 263,295.11 and 129,758.94
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Solution
The fourth proportional to 190,921.14, 263,295.11 and 129,758.94 is: 178,947.68
Step by Step Solution
- Step 1: Write the proportion equation
190,921.14 : 263,295.11 = 129,758.94 : x - Step 2: Convert to fraction form
190,921.14/263,295.11 = 129,758.94/x - Step 3: Cross multiply
190,921.14x = 263,295.11 × 129,758.94 - Step 4: Simplify right side
190,921.14x = 34,164,894,705.18 - Step 5: Solve for x
x = 34,164,894,705.18/190,921.14 - Step 6: Final answer
x = 178,947.68
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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.