Finding the Fourth Proportional to 128,633.74, 192,950.69 and 53,713.06
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Solution
The fourth proportional to 128,633.74, 192,950.69 and 53,713.06 is: 80,569.62
Step by Step Solution
- Step 1: Write the proportion equation
128,633.74 : 192,950.69 = 53,713.06 : x - Step 2: Convert to fraction form
128,633.74/192,950.69 = 53,713.06/x - Step 3: Cross multiply
128,633.74x = 192,950.69 × 53,713.06 - Step 4: Simplify right side
128,633.74x = 10,363,971,238.07 - Step 5: Solve for x
x = 10,363,971,238.07/128,633.74 - Step 6: Final answer
x = 80,569.62
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1.5x scale
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.