Finding the Fourth Proportional to 212,132.64, 318,323.04 and 79,104.80
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Solution
The fourth proportional to 212,132.64, 318,323.04 and 79,104.80 is: 118,703.47
Step by Step Solution
- Step 1: Write the proportion equation
212,132.64 : 318,323.04 = 79,104.80 : x - Step 2: Convert to fraction form
212,132.64/318,323.04 = 79,104.80/x - Step 3: Cross multiply
212,132.64x = 318,323.04 × 79,104.80 - Step 4: Simplify right side
212,132.64x = 25,180,880,414.59 - Step 5: Solve for x
x = 25,180,880,414.59/212,132.64 - Step 6: Final answer
x = 118,703.47
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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.