Finding the Fourth Proportional to 129,818.80, 179,149.84 and 70,202.80
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Solution
The fourth proportional to 129,818.80, 179,149.84 and 70,202.80 is: 96,879.81
Step by Step Solution
- Step 1: Write the proportion equation
129,818.80 : 179,149.84 = 70,202.80 : x - Step 2: Convert to fraction form
129,818.80/179,149.84 = 70,202.80/x - Step 3: Cross multiply
129,818.80x = 179,149.84 × 70,202.80 - Step 4: Simplify right side
129,818.80x = 12,576,820,387.55 - Step 5: Solve for x
x = 12,576,820,387.55/129,818.80 - Step 6: Final answer
x = 96,879.81
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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.