Finding the Fourth Proportional to 139,517.84, 192,534.18 and 75,855.80
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Solution
The fourth proportional to 139,517.84, 192,534.18 and 75,855.80 is: 104,680.77
Step by Step Solution
- Step 1: Write the proportion equation
139,517.84 : 192,534.18 = 75,855.80 : x - Step 2: Convert to fraction form
139,517.84/192,534.18 = 75,855.80/x - Step 3: Cross multiply
139,517.84x = 192,534.18 × 75,855.80 - Step 4: Simplify right side
139,517.84x = 14,604,834,251.24 - Step 5: Solve for x
x = 14,604,834,251.24/139,517.84 - Step 6: Final answer
x = 104,680.77
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1.5x scale
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.