Finding the Fourth Proportional to 138,584.97, 191,247.21 and 74,922.75
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Solution
The fourth proportional to 138,584.97, 191,247.21 and 74,922.75 is: 103,393.37
Step by Step Solution
- Step 1: Write the proportion equation
138,584.97 : 191,247.21 = 74,922.75 : x - Step 2: Convert to fraction form
138,584.97/191,247.21 = 74,922.75/x - Step 3: Cross multiply
138,584.97x = 191,247.21 × 74,922.75 - Step 4: Simplify right side
138,584.97x = 14,328,766,903.03 - Step 5: Solve for x
x = 14,328,766,903.03/138,584.97 - Step 6: Final answer
x = 103,393.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.