Finding the Fourth Proportional to 117,986.24, 162,691.80 and 106,788.80
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Solution
The fourth proportional to 117,986.24, 162,691.80 and 106,788.80 is: 147,251.60
Step by Step Solution
- Step 1: Write the proportion equation
117,986.24 : 162,691.80 = 106,788.80 : x - Step 2: Convert to fraction form
117,986.24/162,691.80 = 106,788.80/x - Step 3: Cross multiply
117,986.24x = 162,691.80 × 106,788.80 - Step 4: Simplify right side
117,986.24x = 17,373,662,091.84 - Step 5: Solve for x
x = 17,373,662,091.84/117,986.24 - Step 6: Final answer
x = 147,251.60
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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.