Finding the Fourth Proportional to 138,615.14, 206,919.95 and 121,800.08
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Solution
The fourth proportional to 138,615.14, 206,919.95 and 121,800.08 is: 181,819.00
Step by Step Solution
- Step 1: Write the proportion equation
138,615.14 : 206,919.95 = 121,800.08 : x - Step 2: Convert to fraction form
138,615.14/206,919.95 = 121,800.08/x - Step 3: Cross multiply
138,615.14x = 206,919.95 × 121,800.08 - Step 4: Simplify right side
138,615.14x = 25,202,865,733.50 - Step 5: Solve for x
x = 25,202,865,733.50/138,615.14 - Step 6: Final answer
x = 181,819.00
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.