Finding the Fourth Proportional to 100,692.16, 138,952.91 and 54,750.80
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Solution
The fourth proportional to 100,692.16, 138,952.91 and 54,750.80 is: 75,554.88
Step by Step Solution
- Step 1: Write the proportion equation
100,692.16 : 138,952.91 = 54,750.80 : x - Step 2: Convert to fraction form
100,692.16/138,952.91 = 54,750.80/x - Step 3: Cross multiply
100,692.16x = 138,952.91 × 54,750.80 - Step 4: Simplify right side
100,692.16x = 7,607,783,469.09 - Step 5: Solve for x
x = 7,607,783,469.09/100,692.16 - Step 6: Final answer
x = 75,554.88
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.