Finding the Fourth Proportional to 140,645.92, 194,091.58 and 76,987.74
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Solution
The fourth proportional to 140,645.92, 194,091.58 and 76,987.74 is: 106,243.20
Step by Step Solution
- Step 1: Write the proportion equation
140,645.92 : 194,091.58 = 76,987.74 : x - Step 2: Convert to fraction form
140,645.92/194,091.58 = 76,987.74/x - Step 3: Cross multiply
140,645.92x = 194,091.58 × 76,987.74 - Step 4: Simplify right side
140,645.92x = 14,942,672,097.23 - Step 5: Solve for x
x = 14,942,672,097.23/140,645.92 - Step 6: Final answer
x = 106,243.20
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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.