Finding the Fourth Proportional to 139,587.06, 192,697.07 and 85,918.08
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Solution
The fourth proportional to 139,587.06, 192,697.07 and 85,918.08 is: 118,608.14
Step by Step Solution
- Step 1: Write the proportion equation
139,587.06 : 192,697.07 = 85,918.08 : x - Step 2: Convert to fraction form
139,587.06/192,697.07 = 85,918.08/x - Step 3: Cross multiply
139,587.06x = 192,697.07 × 85,918.08 - Step 4: Simplify right side
139,587.06x = 16,556,161,846.44 - Step 5: Solve for x
x = 16,556,161,846.44/139,587.06 - Step 6: Final answer
x = 118,608.14
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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.