Finding the Fourth Proportional to 138,091.93, 207,331.84 and 70,672.18
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Solution
The fourth proportional to 138,091.93, 207,331.84 and 70,672.18 is: 106,107.53
Step by Step Solution
- Step 1: Write the proportion equation
138,091.93 : 207,331.84 = 70,672.18 : x - Step 2: Convert to fraction form
138,091.93/207,331.84 = 70,672.18/x - Step 3: Cross multiply
138,091.93x = 207,331.84 × 70,672.18 - Step 4: Simplify right side
138,091.93x = 14,652,593,116.21 - Step 5: Solve for x
x = 14,652,593,116.21/138,091.93 - Step 6: Final answer
x = 106,107.53
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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.