Finding the Fourth Proportional to 129,681.36, 194,609.52 and 50,785.74
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Solution
The fourth proportional to 129,681.36, 194,609.52 and 50,785.74 is: 76,212.87
Step by Step Solution
- Step 1: Write the proportion equation
129,681.36 : 194,609.52 = 50,785.74 : x - Step 2: Convert to fraction form
129,681.36/194,609.52 = 50,785.74/x - Step 3: Cross multiply
129,681.36x = 194,609.52 × 50,785.74 - Step 4: Simplify right side
129,681.36x = 9,883,388,484.24 - Step 5: Solve for x
x = 9,883,388,484.24/129,681.36 - Step 6: Final answer
x = 76,212.87
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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.