Finding the Fourth Proportional to 141,428.99, 195,179.02 and 87,731.31
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Solution
The fourth proportional to 141,428.99, 195,179.02 and 87,731.31 is: 121,073.55
Step by Step Solution
- Step 1: Write the proportion equation
141,428.99 : 195,179.02 = 87,731.31 : x - Step 2: Convert to fraction form
141,428.99/195,179.02 = 87,731.31/x - Step 3: Cross multiply
141,428.99x = 195,179.02 × 87,731.31 - Step 4: Simplify right side
141,428.99x = 17,123,310,133.22 - Step 5: Solve for x
x = 17,123,310,133.22/141,428.99 - Step 6: Final answer
x = 121,073.55
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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.