Finding the Fourth Proportional to 128,525.80, 192,788.70 and 58,541.80
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Solution
The fourth proportional to 128,525.80, 192,788.70 and 58,541.80 is: 87,812.70
Step by Step Solution
- Step 1: Write the proportion equation
128,525.80 : 192,788.70 = 58,541.80 : x - Step 2: Convert to fraction form
128,525.80/192,788.70 = 58,541.80/x - Step 3: Cross multiply
128,525.80x = 192,788.70 × 58,541.80 - Step 4: Simplify right side
128,525.80x = 11,286,197,517.66 - Step 5: Solve for x
x = 11,286,197,517.66/128,525.80 - Step 6: Final answer
x = 87,812.70
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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.