Finding the Fourth Proportional to 138,907.20, 191,692.85 and 75,244.99
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Solution
The fourth proportional to 138,907.20, 191,692.85 and 75,244.99 is: 103,838.58
Step by Step Solution
- Step 1: Write the proportion equation
138,907.20 : 191,692.85 = 75,244.99 : x - Step 2: Convert to fraction form
138,907.20/191,692.85 = 75,244.99/x - Step 3: Cross multiply
138,907.20x = 191,692.85 × 75,244.99 - Step 4: Simplify right side
138,907.20x = 14,423,926,581.32 - Step 5: Solve for x
x = 14,423,926,581.32/138,907.20 - Step 6: Final answer
x = 103,838.58
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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.