Finding the Fourth Proportional to 128,926.62, 193,447.94 and 69,692.94
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Solution
The fourth proportional to 128,926.62, 193,447.94 and 69,692.94 is: 104,570.77
Step by Step Solution
- Step 1: Write the proportion equation
128,926.62 : 193,447.94 = 69,692.94 : x - Step 2: Convert to fraction form
128,926.62/193,447.94 = 69,692.94/x - Step 3: Cross multiply
128,926.62x = 193,447.94 × 69,692.94 - Step 4: Simplify right side
128,926.62x = 13,481,955,675.54 - Step 5: Solve for x
x = 13,481,955,675.54/128,926.62 - Step 6: Final answer
x = 104,570.77
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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.