Finding the Fourth Proportional to 135,121.64, 202,692.92 and 78,967.56
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Solution
The fourth proportional to 135,121.64, 202,692.92 and 78,967.56 is: 118,457.45
Step by Step Solution
- Step 1: Write the proportion equation
135,121.64 : 202,692.92 = 78,967.56 : x - Step 2: Convert to fraction form
135,121.64/202,692.92 = 78,967.56/x - Step 3: Cross multiply
135,121.64x = 202,692.92 × 78,967.56 - Step 4: Simplify right side
135,121.64x = 16,006,165,321.68 - Step 5: Solve for x
x = 16,006,165,321.68/135,121.64 - Step 6: Final answer
x = 118,457.45
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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.