Finding the Fourth Proportional to 142,414.40, 196,531.57 and 81,962.99
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Solution
The fourth proportional to 142,414.40, 196,531.57 and 81,962.99 is: 113,108.75
Step by Step Solution
- Step 1: Write the proportion equation
142,414.40 : 196,531.57 = 81,962.99 : x - Step 2: Convert to fraction form
142,414.40/196,531.57 = 81,962.99/x - Step 3: Cross multiply
142,414.40x = 196,531.57 × 81,962.99 - Step 4: Simplify right side
142,414.40x = 16,108,314,502.34 - Step 5: Solve for x
x = 16,108,314,502.34/142,414.40 - Step 6: Final answer
x = 113,108.75
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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.