Finding the Fourth Proportional to 162,378.20, 243,308.10 and 135,939.80
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Solution
The fourth proportional to 162,378.20, 243,308.10 and 135,939.80 is: 203,692.70
Step by Step Solution
- Step 1: Write the proportion equation
162,378.20 : 243,308.10 = 135,939.80 : x - Step 2: Convert to fraction form
162,378.20/243,308.10 = 135,939.80/x - Step 3: Cross multiply
162,378.20x = 243,308.10 × 135,939.80 - Step 4: Simplify right side
162,378.20x = 33,075,254,452.38 - Step 5: Solve for x
x = 33,075,254,452.38/162,378.20 - Step 6: Final answer
x = 203,692.70
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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.