Finding the Fourth Proportional to 122,361.64, 168,860.70 and 68,643.45
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Solution
The fourth proportional to 122,361.64, 168,860.70 and 68,643.45 is: 94,728.88
Step by Step Solution
- Step 1: Write the proportion equation
122,361.64 : 168,860.70 = 68,643.45 : x - Step 2: Convert to fraction form
122,361.64/168,860.70 = 68,643.45/x - Step 3: Cross multiply
122,361.64x = 168,860.70 × 68,643.45 - Step 4: Simplify right side
122,361.64x = 11,591,181,017.42 - Step 5: Solve for x
x = 11,591,181,017.42/122,361.64 - Step 6: Final answer
x = 94,728.88
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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.