Finding the Fourth Proportional to 128,603.26, 192,904.91 and 53,682.54
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Solution
The fourth proportional to 128,603.26, 192,904.91 and 53,682.54 is: 80,523.82
Step by Step Solution
- Step 1: Write the proportion equation
128,603.26 : 192,904.91 = 53,682.54 : x - Step 2: Convert to fraction form
128,603.26/192,904.91 = 53,682.54/x - Step 3: Cross multiply
128,603.26x = 192,904.91 × 53,682.54 - Step 4: Simplify right side
128,603.26x = 10,355,625,547.27 - Step 5: Solve for x
x = 10,355,625,547.27/128,603.26 - Step 6: Final answer
x = 80,523.82
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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.