Finding the Fourth Proportional to 127,778.49, 191,660.80 and 39,025.07
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Solution
The fourth proportional to 127,778.49, 191,660.80 and 39,025.07 is: 58,535.49
Step by Step Solution
- Step 1: Write the proportion equation
127,778.49 : 191,660.80 = 39,025.07 : x - Step 2: Convert to fraction form
127,778.49/191,660.80 = 39,025.07/x - Step 3: Cross multiply
127,778.49x = 191,660.80 × 39,025.07 - Step 4: Simplify right side
127,778.49x = 7,479,576,136.26 - Step 5: Solve for x
x = 7,479,576,136.26/127,778.49 - Step 6: Final answer
x = 58,535.49
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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.