Finding the Fourth Proportional to 129,660.68, 194,490.96 and 40,923.08
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Solution
The fourth proportional to 129,660.68, 194,490.96 and 40,923.08 is: 61,384.60
Step by Step Solution
- Step 1: Write the proportion equation
129,660.68 : 194,490.96 = 40,923.08 : x - Step 2: Convert to fraction form
129,660.68/194,490.96 = 40,923.08/x - Step 3: Cross multiply
129,660.68x = 194,490.96 × 40,923.08 - Step 4: Simplify right side
129,660.68x = 7,959,169,115.36 - Step 5: Solve for x
x = 7,959,169,115.36/129,660.68 - Step 6: Final answer
x = 61,384.60
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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.