Finding the Fourth Proportional to 144,143.08, 198,864.74 and 83,692.20
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Solution
The fourth proportional to 144,143.08, 198,864.74 and 83,692.20 is: 115,464.63
Step by Step Solution
- Step 1: Write the proportion equation
144,143.08 : 198,864.74 = 83,692.20 : x - Step 2: Convert to fraction form
144,143.08/198,864.74 = 83,692.20/x - Step 3: Cross multiply
144,143.08x = 198,864.74 × 83,692.20 - Step 4: Simplify right side
144,143.08x = 16,643,427,593.03 - Step 5: Solve for x
x = 16,643,427,593.03/144,143.08 - Step 6: Final answer
x = 115,464.63
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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.