Finding the Fourth Proportional to 129,645.13, 194,467.73 and 40,905.58
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Solution
The fourth proportional to 129,645.13, 194,467.73 and 40,905.58 is: 61,358.38
Step by Step Solution
- Step 1: Write the proportion equation
129,645.13 : 194,467.73 = 40,905.58 : x - Step 2: Convert to fraction form
129,645.13/194,467.73 = 40,905.58/x - Step 3: Cross multiply
129,645.13x = 194,467.73 × 40,905.58 - Step 4: Simplify right side
129,645.13x = 7,954,815,286.93 - Step 5: Solve for x
x = 7,954,815,286.93/129,645.13 - Step 6: Final answer
x = 61,358.38
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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.