Finding the Fourth Proportional to 153,844.44, 212,315.99 and 85,874.64
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Solution
The fourth proportional to 153,844.44, 212,315.99 and 85,874.64 is: 118,512.95
Step by Step Solution
- Step 1: Write the proportion equation
153,844.44 : 212,315.99 = 85,874.64 : x - Step 2: Convert to fraction form
153,844.44/212,315.99 = 85,874.64/x - Step 3: Cross multiply
153,844.44x = 212,315.99 × 85,874.64 - Step 4: Simplify right side
153,844.44x = 18,232,558,778.12 - Step 5: Solve for x
x = 18,232,558,778.12/153,844.44 - Step 6: Final answer
x = 118,512.95
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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.