Finding the Fourth Proportional to 129,618.40, 194,038.80 and 121,928.80
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Solution
The fourth proportional to 129,618.40, 194,038.80 and 121,928.80 is: 182,527.47
Step by Step Solution
- Step 1: Write the proportion equation
129,618.40 : 194,038.80 = 121,928.80 : x - Step 2: Convert to fraction form
129,618.40/194,038.80 = 121,928.80/x - Step 3: Cross multiply
129,618.40x = 194,038.80 × 121,928.80 - Step 4: Simplify right side
129,618.40x = 23,658,918,037.44 - Step 5: Solve for x
x = 23,658,918,037.44/129,618.40 - Step 6: Final answer
x = 182,527.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.