Finding the Fourth Proportional to 106,979.13, 147,639.51 and 59,236.92
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Solution
The fourth proportional to 106,979.13, 147,639.51 and 59,236.92 is: 81,751.55
Step by Step Solution
- Step 1: Write the proportion equation
106,979.13 : 147,639.51 = 59,236.92 : x - Step 2: Convert to fraction form
106,979.13/147,639.51 = 59,236.92/x - Step 3: Cross multiply
106,979.13x = 147,639.51 × 59,236.92 - Step 4: Simplify right side
106,979.13x = 8,745,709,842.71 - Step 5: Solve for x
x = 8,745,709,842.71/106,979.13 - Step 6: Final answer
x = 81,751.55
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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.