Finding the Fourth Proportional to 157,338.23, 217,126.10 and 85,718.03
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Solution
The fourth proportional to 157,338.23, 217,126.10 and 85,718.03 is: 118,290.52
Step by Step Solution
- Step 1: Write the proportion equation
157,338.23 : 217,126.10 = 85,718.03 : x - Step 2: Convert to fraction form
157,338.23/217,126.10 = 85,718.03/x - Step 3: Cross multiply
157,338.23x = 217,126.10 × 85,718.03 - Step 4: Simplify right side
157,338.23x = 18,611,620,682.25 - Step 5: Solve for x
x = 18,611,620,682.25/157,338.23 - Step 6: Final answer
x = 118,290.52
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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.