Finding the Fourth Proportional to 133,489.65, 184,236.39 and 76,129.08
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Solution
The fourth proportional to 133,489.65, 184,236.39 and 76,129.08 is: 105,069.92
Step by Step Solution
- Step 1: Write the proportion equation
133,489.65 : 184,236.39 = 76,129.08 : x - Step 2: Convert to fraction form
133,489.65/184,236.39 = 76,129.08/x - Step 3: Cross multiply
133,489.65x = 184,236.39 × 76,129.08 - Step 4: Simplify right side
133,489.65x = 14,025,746,873.22 - Step 5: Solve for x
x = 14,025,746,873.22/133,489.65 - Step 6: Final answer
x = 105,069.92
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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.