Finding the Fourth Proportional to 129,933.40, 194,900.10 and 106,313.80
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Solution
The fourth proportional to 129,933.40, 194,900.10 and 106,313.80 is: 159,470.70
Step by Step Solution
- Step 1: Write the proportion equation
129,933.40 : 194,900.10 = 106,313.80 : x - Step 2: Convert to fraction form
129,933.40/194,900.10 = 106,313.80/x - Step 3: Cross multiply
129,933.40x = 194,900.10 × 106,313.80 - Step 4: Simplify right side
129,933.40x = 20,720,570,251.38 - Step 5: Solve for x
x = 20,720,570,251.38/129,933.40 - Step 6: Final answer
x = 159,470.70
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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.