Finding the Fourth Proportional to 106,692.21, 147,170.18 and 68,438.88
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Solution
The fourth proportional to 106,692.21, 147,170.18 and 68,438.88 is: 94,403.92
Step by Step Solution
- Step 1: Write the proportion equation
106,692.21 : 147,170.18 = 68,438.88 : x - Step 2: Convert to fraction form
106,692.21/147,170.18 = 68,438.88/x - Step 3: Cross multiply
106,692.21x = 147,170.18 × 68,438.88 - Step 4: Simplify right side
106,692.21x = 10,072,162,459.70 - Step 5: Solve for x
x = 10,072,162,459.70/106,692.21 - Step 6: Final answer
x = 94,403.92
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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.