Finding the Fourth Proportional to 170,749.68, 235,634.52 and 99,143.28
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Solution
The fourth proportional to 170,749.68, 235,634.52 and 99,143.28 is: 136,817.70
Step by Step Solution
- Step 1: Write the proportion equation
170,749.68 : 235,634.52 = 99,143.28 : x - Step 2: Convert to fraction form
170,749.68/235,634.52 = 99,143.28/x - Step 3: Cross multiply
170,749.68x = 235,634.52 × 99,143.28 - Step 4: Simplify right side
170,749.68x = 23,361,579,194.03 - Step 5: Solve for x
x = 23,361,579,194.03/170,749.68 - Step 6: Final answer
x = 136,817.70
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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.