Finding the Fourth Proportional to 153,949.36, 212,445.99 and 85,964.44
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Solution
The fourth proportional to 153,949.36, 212,445.99 and 85,964.44 is: 118,628.62
Step by Step Solution
- Step 1: Write the proportion equation
153,949.36 : 212,445.99 = 85,964.44 : x - Step 2: Convert to fraction form
153,949.36/212,445.99 = 85,964.44/x - Step 3: Cross multiply
153,949.36x = 212,445.99 × 85,964.44 - Step 4: Simplify right side
153,949.36x = 18,262,800,427.82 - Step 5: Solve for x
x = 18,262,800,427.82/153,949.36 - Step 6: Final answer
x = 118,628.62
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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.