Finding the Fourth Proportional to 118,272.20, 177,408.30 and 84,921.80
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Solution
The fourth proportional to 118,272.20, 177,408.30 and 84,921.80 is: 127,382.70
Step by Step Solution
- Step 1: Write the proportion equation
118,272.20 : 177,408.30 = 84,921.80 : x - Step 2: Convert to fraction form
118,272.20/177,408.30 = 84,921.80/x - Step 3: Cross multiply
118,272.20x = 177,408.30 × 84,921.80 - Step 4: Simplify right side
118,272.20x = 15,065,832,170.94 - Step 5: Solve for x
x = 15,065,832,170.94/118,272.20 - Step 6: Final answer
x = 127,382.70
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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.