Finding the Fourth Proportional to 205,361.90, 283,247.79 and 129,837.50
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Solution
The fourth proportional to 205,361.90, 283,247.79 and 129,837.50 is: 179,079.88
Step by Step Solution
- Step 1: Write the proportion equation
205,361.90 : 283,247.79 = 129,837.50 : x - Step 2: Convert to fraction form
205,361.90/283,247.79 = 129,837.50/x - Step 3: Cross multiply
205,361.90x = 283,247.79 × 129,837.50 - Step 4: Simplify right side
205,361.90x = 36,776,184,934.13 - Step 5: Solve for x
x = 36,776,184,934.13/205,361.90 - Step 6: Final answer
x = 179,079.88
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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.