Finding the Fourth Proportional to 106,993.12, 147,633.12 and 61,672.96
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Solution
The fourth proportional to 106,993.12, 147,633.12 and 61,672.96 is: 85,098.66
Step by Step Solution
- Step 1: Write the proportion equation
106,993.12 : 147,633.12 = 61,672.96 : x - Step 2: Convert to fraction form
106,993.12/147,633.12 = 61,672.96/x - Step 3: Cross multiply
106,993.12x = 147,633.12 × 61,672.96 - Step 4: Simplify right side
106,993.12x = 9,104,971,504.44 - Step 5: Solve for x
x = 9,104,971,504.44/106,993.12 - Step 6: Final answer
x = 85,098.66
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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.