Finding the Fourth Proportional to 134,861.35, 186,107.74 and 74,431.99
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Solution
The fourth proportional to 134,861.35, 186,107.74 and 74,431.99 is: 102,715.63
Step by Step Solution
- Step 1: Write the proportion equation
134,861.35 : 186,107.74 = 74,431.99 : x - Step 2: Convert to fraction form
134,861.35/186,107.74 = 74,431.99/x - Step 3: Cross multiply
134,861.35x = 186,107.74 × 74,431.99 - Step 4: Simplify right side
134,861.35x = 13,852,368,139.90 - Step 5: Solve for x
x = 13,852,368,139.90/134,861.35 - Step 6: Final answer
x = 102,715.63
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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.