Finding the Fourth Proportional to 129,809.60, 194,779.20 and 73,692.80
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Solution
The fourth proportional to 129,809.60, 194,779.20 and 73,692.80 is: 110,575.99
Step by Step Solution
- Step 1: Write the proportion equation
129,809.60 : 194,779.20 = 73,692.80 : x - Step 2: Convert to fraction form
129,809.60/194,779.20 = 73,692.80/x - Step 3: Cross multiply
129,809.60x = 194,779.20 × 73,692.80 - Step 4: Simplify right side
129,809.60x = 14,353,824,629.76 - Step 5: Solve for x
x = 14,353,824,629.76/129,809.60 - Step 6: Final answer
x = 110,575.99
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1.5x scale
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.