Finding the Fourth Proportional to 145,825.44, 201,239.11 and 78,757.44
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Solution
The fourth proportional to 145,825.44, 201,239.11 and 78,757.44 is: 108,685.27
Step by Step Solution
- Step 1: Write the proportion equation
145,825.44 : 201,239.11 = 78,757.44 : x - Step 2: Convert to fraction form
145,825.44/201,239.11 = 78,757.44/x - Step 3: Cross multiply
145,825.44x = 201,239.11 × 78,757.44 - Step 4: Simplify right side
145,825.44x = 15,849,077,131.48 - Step 5: Solve for x
x = 15,849,077,131.48/145,825.44 - Step 6: Final answer
x = 108,685.27
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.