Finding the Fourth Proportional to 129,319.64, 193,864.44 and 50,489.08
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Solution
The fourth proportional to 129,319.64, 193,864.44 and 50,489.08 is: 75,688.71
Step by Step Solution
- Step 1: Write the proportion equation
129,319.64 : 193,864.44 = 50,489.08 : x - Step 2: Convert to fraction form
129,319.64/193,864.44 = 50,489.08/x - Step 3: Cross multiply
129,319.64x = 193,864.44 × 50,489.08 - Step 4: Simplify right side
129,319.64x = 9,788,037,220.32 - Step 5: Solve for x
x = 9,788,037,220.32/129,319.64 - Step 6: Final answer
x = 75,688.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.