Finding the Fourth Proportional to 129,643.70, 194,465.55 and 107,773.70
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Solution
The fourth proportional to 129,643.70, 194,465.55 and 107,773.70 is: 161,660.55
Step by Step Solution
- Step 1: Write the proportion equation
129,643.70 : 194,465.55 = 107,773.70 : x - Step 2: Convert to fraction form
129,643.70/194,465.55 = 107,773.70/x - Step 3: Cross multiply
129,643.70x = 194,465.55 × 107,773.70 - Step 4: Simplify right side
129,643.70x = 20,958,271,846.04 - Step 5: Solve for x
x = 20,958,271,846.04/129,643.70 - Step 6: Final answer
x = 161,660.55
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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.