Finding the Fourth Proportional to 138,583.97, 191,245.83 and 74,921.75
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Solution
The fourth proportional to 138,583.97, 191,245.83 and 74,921.75 is: 103,391.99
Step by Step Solution
- Step 1: Write the proportion equation
138,583.97 : 191,245.83 = 74,921.75 : x - Step 2: Convert to fraction form
138,583.97/191,245.83 = 74,921.75/x - Step 3: Cross multiply
138,583.97x = 191,245.83 × 74,921.75 - Step 4: Simplify right side
138,583.97x = 14,328,472,263.80 - Step 5: Solve for x
x = 14,328,472,263.80/138,583.97 - Step 6: Final answer
x = 103,391.99
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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.