Finding the Fourth Proportional to 138,460.14, 207,690.26 and 71,865.99
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Solution
The fourth proportional to 138,460.14, 207,690.26 and 71,865.99 is: 107,799.01
Step by Step Solution
- Step 1: Write the proportion equation
138,460.14 : 207,690.26 = 71,865.99 : x - Step 2: Convert to fraction form
138,460.14/207,690.26 = 71,865.99/x - Step 3: Cross multiply
138,460.14x = 207,690.26 × 71,865.99 - Step 4: Simplify right side
138,460.14x = 14,925,865,788.93 - Step 5: Solve for x
x = 14,925,865,788.93/138,460.14 - Step 6: Final answer
x = 107,799.01
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.