Finding the Fourth Proportional to 136,982.68, 189,035.84 and 79,655.63
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Solution
The fourth proportional to 136,982.68, 189,035.84 and 79,655.63 is: 109,924.62
Step by Step Solution
- Step 1: Write the proportion equation
136,982.68 : 189,035.84 = 79,655.63 : x - Step 2: Convert to fraction form
136,982.68/189,035.84 = 79,655.63/x - Step 3: Cross multiply
136,982.68x = 189,035.84 × 79,655.63 - Step 4: Simplify right side
136,982.68x = 15,057,768,181.74 - Step 5: Solve for x
x = 15,057,768,181.74/136,982.68 - Step 6: Final answer
x = 109,924.62
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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.