Finding the Fourth Proportional to 128,447.38, 192,726.43 and 53,582.26
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Solution
The fourth proportional to 128,447.38, 192,726.43 and 53,582.26 is: 80,396.48
Step by Step Solution
- Step 1: Write the proportion equation
128,447.38 : 192,726.43 = 53,582.26 : x - Step 2: Convert to fraction form
128,447.38/192,726.43 = 53,582.26/x - Step 3: Cross multiply
128,447.38x = 192,726.43 × 53,582.26 - Step 4: Simplify right side
128,447.38x = 10,326,717,681.13 - Step 5: Solve for x
x = 10,326,717,681.13/128,447.38 - Step 6: Final answer
x = 80,396.48
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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.