Finding the Fourth Proportional to 128,574.12, 192,891.97 and 53,652.59
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Solution
The fourth proportional to 128,574.12, 192,891.97 and 53,652.59 is: 80,491.73
Step by Step Solution
- Step 1: Write the proportion equation
128,574.12 : 192,891.97 = 53,652.59 : x - Step 2: Convert to fraction form
128,574.12/192,891.97 = 53,652.59/x - Step 3: Cross multiply
128,574.12x = 192,891.97 × 53,652.59 - Step 4: Simplify right side
128,574.12x = 10,349,153,365.54 - Step 5: Solve for x
x = 10,349,153,365.54/128,574.12 - Step 6: Final answer
x = 80,491.73
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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.