Finding the Fourth Proportional to 135,664.64, 187,229.04 and 79,074.80
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Solution
The fourth proportional to 135,664.64, 187,229.04 and 79,074.80 is: 109,130.12
Step by Step Solution
- Step 1: Write the proportion equation
135,664.64 : 187,229.04 = 79,074.80 : x - Step 2: Convert to fraction form
135,664.64/187,229.04 = 79,074.80/x - Step 3: Cross multiply
135,664.64x = 187,229.04 × 79,074.80 - Step 4: Simplify right side
135,664.64x = 14,805,098,892.19 - Step 5: Solve for x
x = 14,805,098,892.19/135,664.64 - Step 6: Final answer
x = 109,130.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.