Finding the Fourth Proportional to 211,135.79, 291,372.12 and 120,489.95
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Solution
The fourth proportional to 211,135.79, 291,372.12 and 120,489.95 is: 166,278.83
Step by Step Solution
- Step 1: Write the proportion equation
211,135.79 : 291,372.12 = 120,489.95 : x - Step 2: Convert to fraction form
211,135.79/291,372.12 = 120,489.95/x - Step 3: Cross multiply
211,135.79x = 291,372.12 × 120,489.95 - Step 4: Simplify right side
211,135.79x = 35,107,410,713.33 - Step 5: Solve for x
x = 35,107,410,713.33/211,135.79 - Step 6: Final answer
x = 166,278.83
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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.