Finding the Fourth Proportional to 129,643.13, 194,464.73 and 40,903.58
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Solution
The fourth proportional to 129,643.13, 194,464.73 and 40,903.58 is: 61,355.38
Step by Step Solution
- Step 1: Write the proportion equation
129,643.13 : 194,464.73 = 40,903.58 : x - Step 2: Convert to fraction form
129,643.13/194,464.73 = 40,903.58/x - Step 3: Cross multiply
129,643.13x = 194,464.73 × 40,903.58 - Step 4: Simplify right side
129,643.13x = 7,954,304,229.15 - Step 5: Solve for x
x = 7,954,304,229.15/129,643.13 - Step 6: Final answer
x = 61,355.38
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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.