Finding the Fourth Proportional to 254,160.18, 381,129.53 and 85,649.09
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Solution
The fourth proportional to 254,160.18, 381,129.53 and 85,649.09 is: 128,436.31
Step by Step Solution
- Step 1: Write the proportion equation
254,160.18 : 381,129.53 = 85,649.09 : x - Step 2: Convert to fraction form
254,160.18/381,129.53 = 85,649.09/x - Step 3: Cross multiply
254,160.18x = 381,129.53 × 85,649.09 - Step 4: Simplify right side
254,160.18x = 32,643,395,082.73 - Step 5: Solve for x
x = 32,643,395,082.73/254,160.18 - Step 6: Final answer
x = 128,436.31
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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.