Finding the Fourth Proportional to 137,141.84, 189,179.56 and 79,774.68
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Solution
The fourth proportional to 137,141.84, 189,179.56 and 79,774.68 is: 110,044.75
Step by Step Solution
- Step 1: Write the proportion equation
137,141.84 : 189,179.56 = 79,774.68 : x - Step 2: Convert to fraction form
137,141.84/189,179.56 = 79,774.68/x - Step 3: Cross multiply
137,141.84x = 189,179.56 × 79,774.68 - Step 4: Simplify right side
137,141.84x = 15,091,738,861.54 - Step 5: Solve for x
x = 15,091,738,861.54/137,141.84 - Step 6: Final answer
x = 110,044.75
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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.