Finding the Fourth Proportional to 136,733.40, 188,692.43 and 76,307.63
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Solution
The fourth proportional to 136,733.40, 188,692.43 and 76,307.63 is: 105,304.71
Step by Step Solution
- Step 1: Write the proportion equation
136,733.40 : 188,692.43 = 76,307.63 : x - Step 2: Convert to fraction form
136,733.40/188,692.43 = 76,307.63/x - Step 3: Cross multiply
136,733.40x = 188,692.43 × 76,307.63 - Step 4: Simplify right side
136,733.40x = 14,398,670,807.24 - Step 5: Solve for x
x = 14,398,670,807.24/136,733.40 - Step 6: Final answer
x = 105,304.71
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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.