Finding the Fourth Proportional to 143,065.28, 197,427.36 and 79,403.84
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Solution
The fourth proportional to 143,065.28, 197,427.36 and 79,403.84 is: 109,575.79
Step by Step Solution
- Step 1: Write the proportion equation
143,065.28 : 197,427.36 = 79,403.84 : x - Step 2: Convert to fraction form
143,065.28/197,427.36 = 79,403.84/x - Step 3: Cross multiply
143,065.28x = 197,427.36 × 79,403.84 - Step 4: Simplify right side
143,065.28x = 15,676,490,505.06 - Step 5: Solve for x
x = 15,676,490,505.06/143,065.28 - Step 6: Final answer
x = 109,575.79
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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.