Finding the Fourth Proportional to 135,406.61, 186,863.09 and 74,977.14
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Solution
The fourth proportional to 135,406.61, 186,863.09 and 74,977.14 is: 103,469.54
Step by Step Solution
- Step 1: Write the proportion equation
135,406.61 : 186,863.09 = 74,977.14 : x - Step 2: Convert to fraction form
135,406.61/186,863.09 = 74,977.14/x - Step 3: Cross multiply
135,406.61x = 186,863.09 × 74,977.14 - Step 4: Simplify right side
135,406.61x = 14,010,460,059.76 - Step 5: Solve for x
x = 14,010,460,059.76/135,406.61 - Step 6: Final answer
x = 103,469.54
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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.