Finding the Fourth Proportional to 143,352.97, 197,780.79 and 79,678.48
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Solution
The fourth proportional to 143,352.97, 197,780.79 and 79,678.48 is: 109,930.56
Step by Step Solution
- Step 1: Write the proportion equation
143,352.97 : 197,780.79 = 79,678.48 : x - Step 2: Convert to fraction form
143,352.97/197,780.79 = 79,678.48/x - Step 3: Cross multiply
143,352.97x = 197,780.79 × 79,678.48 - Step 4: Simplify right side
143,352.97x = 15,758,872,720.40 - Step 5: Solve for x
x = 15,758,872,720.40/143,352.97 - Step 6: Final answer
x = 109,930.56
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1.5x scale
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.