Finding the Fourth Proportional to 129,657.40, 194,777.70 and 124,700.20
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Solution
The fourth proportional to 129,657.40, 194,777.70 and 124,700.20 is: 187,330.75
Step by Step Solution
- Step 1: Write the proportion equation
129,657.40 : 194,777.70 = 124,700.20 : x - Step 2: Convert to fraction form
129,657.40/194,777.70 = 124,700.20/x - Step 3: Cross multiply
129,657.40x = 194,777.70 × 124,700.20 - Step 4: Simplify right side
129,657.40x = 24,288,818,145.54 - Step 5: Solve for x
x = 24,288,818,145.54/129,657.40 - Step 6: Final answer
x = 187,330.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.