Finding the Fourth Proportional to 134,879.84, 186,134.20 and 74,450.50
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Solution
The fourth proportional to 134,879.84, 186,134.20 and 74,450.50 is: 102,741.70
Step by Step Solution
- Step 1: Write the proportion equation
134,879.84 : 186,134.20 = 74,450.50 : x - Step 2: Convert to fraction form
134,879.84/186,134.20 = 74,450.50/x - Step 3: Cross multiply
134,879.84x = 186,134.20 × 74,450.50 - Step 4: Simplify right side
134,879.84x = 13,857,784,513.05 - Step 5: Solve for x
x = 13,857,784,513.05/134,879.84 - Step 6: Final answer
x = 102,741.70
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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.