Finding the Fourth Proportional to 128,922.09, 193,460.90 and 55,050.09
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Solution
The fourth proportional to 128,922.09, 193,460.90 and 55,050.09 is: 82,608.34
Step by Step Solution
- Step 1: Write the proportion equation
128,922.09 : 193,460.90 = 55,050.09 : x - Step 2: Convert to fraction form
128,922.09/193,460.90 = 55,050.09/x - Step 3: Cross multiply
128,922.09x = 193,460.90 × 55,050.09 - Step 4: Simplify right side
128,922.09x = 10,650,039,681.23 - Step 5: Solve for x
x = 10,650,039,681.23/128,922.09 - Step 6: Final answer
x = 82,608.34
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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.