Finding the Fourth Proportional to 118,271.20, 177,406.80 and 84,920.80
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Solution
The fourth proportional to 118,271.20, 177,406.80 and 84,920.80 is: 127,381.20
Step by Step Solution
- Step 1: Write the proportion equation
118,271.20 : 177,406.80 = 84,920.80 : x - Step 2: Convert to fraction form
118,271.20/177,406.80 = 84,920.80/x - Step 3: Cross multiply
118,271.20x = 177,406.80 × 84,920.80 - Step 4: Simplify right side
118,271.20x = 15,065,527,381.44 - Step 5: Solve for x
x = 15,065,527,381.44/118,271.20 - Step 6: Final answer
x = 127,381.20
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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.