Finding the Fourth Proportional to 142,793.52, 197,052.12 and 79,130.76
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Solution
The fourth proportional to 142,793.52, 197,052.12 and 79,130.76 is: 109,198.82
Step by Step Solution
- Step 1: Write the proportion equation
142,793.52 : 197,052.12 = 79,130.76 : x - Step 2: Convert to fraction form
142,793.52/197,052.12 = 79,130.76/x - Step 3: Cross multiply
142,793.52x = 197,052.12 × 79,130.76 - Step 4: Simplify right side
142,793.52x = 15,592,884,015.21 - Step 5: Solve for x
x = 15,592,884,015.21/142,793.52 - Step 6: Final answer
x = 109,198.82
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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.