Finding the Fourth Proportional to 154,817.17, 213,449.90 and 100,272.99
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Solution
The fourth proportional to 154,817.17, 213,449.90 and 100,272.99 is: 138,248.62
Step by Step Solution
- Step 1: Write the proportion equation
154,817.17 : 213,449.90 = 100,272.99 : x - Step 2: Convert to fraction form
154,817.17/213,449.90 = 100,272.99/x - Step 3: Cross multiply
154,817.17x = 213,449.90 × 100,272.99 - Step 4: Simplify right side
154,817.17x = 21,403,259,688.20 - Step 5: Solve for x
x = 21,403,259,688.20/154,817.17 - Step 6: Final answer
x = 138,248.62
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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.