Finding the Fourth Proportional to 129,643.20, 194,464.80 and 121,348.80
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Solution
The fourth proportional to 129,643.20, 194,464.80 and 121,348.80 is: 182,023.20
Step by Step Solution
- Step 1: Write the proportion equation
129,643.20 : 194,464.80 = 121,348.80 : x - Step 2: Convert to fraction form
129,643.20/194,464.80 = 121,348.80/x - Step 3: Cross multiply
129,643.20x = 194,464.80 × 121,348.80 - Step 4: Simplify right side
129,643.20x = 23,598,070,122.24 - Step 5: Solve for x
x = 23,598,070,122.24/129,643.20 - Step 6: Final answer
x = 182,023.20
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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.