Finding the Fourth Proportional to 106,969.97, 147,651.36 and 61,678.11
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Solution
The fourth proportional to 106,969.97, 147,651.36 and 61,678.11 is: 85,134.70
Step by Step Solution
- Step 1: Write the proportion equation
106,969.97 : 147,651.36 = 61,678.11 : x - Step 2: Convert to fraction form
106,969.97/147,651.36 = 61,678.11/x - Step 3: Cross multiply
106,969.97x = 147,651.36 × 61,678.11 - Step 4: Simplify right side
106,969.97x = 9,106,856,315.59 - Step 5: Solve for x
x = 9,106,856,315.59/106,969.97 - Step 6: Final answer
x = 85,134.70
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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.