Finding the Fourth Proportional to 135,149.05, 186,491.40 and 74,709.95
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Solution
The fourth proportional to 135,149.05, 186,491.40 and 74,709.95 is: 103,091.84
Step by Step Solution
- Step 1: Write the proportion equation
135,149.05 : 186,491.40 = 74,709.95 : x - Step 2: Convert to fraction form
135,149.05/186,491.40 = 74,709.95/x - Step 3: Cross multiply
135,149.05x = 186,491.40 × 74,709.95 - Step 4: Simplify right side
135,149.05x = 13,932,763,169.43 - Step 5: Solve for x
x = 13,932,763,169.43/135,149.05 - Step 6: Final answer
x = 103,091.84
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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.