Finding the Fourth Proportional to 135,889.94, 187,529.43 and 79,290.38
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Solution
The fourth proportional to 135,889.94, 187,529.43 and 79,290.38 is: 109,421.49
Step by Step Solution
- Step 1: Write the proportion equation
135,889.94 : 187,529.43 = 79,290.38 : x - Step 2: Convert to fraction form
135,889.94/187,529.43 = 79,290.38/x - Step 3: Cross multiply
135,889.94x = 187,529.43 × 79,290.38 - Step 4: Simplify right side
135,889.94x = 14,869,278,828.24 - Step 5: Solve for x
x = 14,869,278,828.24/135,889.94 - Step 6: Final answer
x = 109,421.49
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1.5x scale
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.