Finding the Fourth Proportional to 103,357.11, 142,622.19 and 69,358.80
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Solution
The fourth proportional to 103,357.11, 142,622.19 and 69,358.80 is: 95,708.02
Step by Step Solution
- Step 1: Write the proportion equation
103,357.11 : 142,622.19 = 69,358.80 : x - Step 2: Convert to fraction form
103,357.11/142,622.19 = 69,358.80/x - Step 3: Cross multiply
103,357.11x = 142,622.19 × 69,358.80 - Step 4: Simplify right side
103,357.11x = 9,892,103,951.77 - Step 5: Solve for x
x = 9,892,103,951.77/103,357.11 - Step 6: Final answer
x = 95,708.02
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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.