Finding the Fourth Proportional to 153,208.05, 211,410.99 and 85,213.95
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Solution
The fourth proportional to 153,208.05, 211,410.99 and 85,213.95 is: 117,586.29
Step by Step Solution
- Step 1: Write the proportion equation
153,208.05 : 211,410.99 = 85,213.95 : x - Step 2: Convert to fraction form
153,208.05/211,410.99 = 85,213.95/x - Step 3: Cross multiply
153,208.05x = 211,410.99 × 85,213.95 - Step 4: Simplify right side
153,208.05x = 18,015,165,531.31 - Step 5: Solve for x
x = 18,015,165,531.31/153,208.05 - Step 6: Final answer
x = 117,586.29
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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.