Finding the Fourth Proportional to 128,296.25, 192,432.08 and 39,525.92
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Solution
The fourth proportional to 128,296.25, 192,432.08 and 39,525.92 is: 59,285.10
Step by Step Solution
- Step 1: Write the proportion equation
128,296.25 : 192,432.08 = 39,525.92 : x - Step 2: Convert to fraction form
128,296.25/192,432.08 = 39,525.92/x - Step 3: Cross multiply
128,296.25x = 192,432.08 × 39,525.92 - Step 4: Simplify right side
128,296.25x = 7,606,055,829.05 - Step 5: Solve for x
x = 7,606,055,829.05/128,296.25 - Step 6: Final answer
x = 59,285.10
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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.