Finding the Fourth Proportional to 138,179.36, 207,269.37 and 38,344.91
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Solution
The fourth proportional to 138,179.36, 207,269.37 and 38,344.91 is: 57,517.46
Step by Step Solution
- Step 1: Write the proportion equation
138,179.36 : 207,269.37 = 38,344.91 : x - Step 2: Convert to fraction form
138,179.36/207,269.37 = 38,344.91/x - Step 3: Cross multiply
138,179.36x = 207,269.37 × 38,344.91 - Step 4: Simplify right side
138,179.36x = 7,947,725,338.41 - Step 5: Solve for x
x = 7,947,725,338.41/138,179.36 - Step 6: Final answer
x = 57,517.46
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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.