Finding the Fourth Proportional to 139,170.05, 192,034.26 and 77,913.07
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Solution
The fourth proportional to 139,170.05, 192,034.26 and 77,913.07 is: 107,508.61
Step by Step Solution
- Step 1: Write the proportion equation
139,170.05 : 192,034.26 = 77,913.07 : x - Step 2: Convert to fraction form
139,170.05/192,034.26 = 77,913.07/x - Step 3: Cross multiply
139,170.05x = 192,034.26 × 77,913.07 - Step 4: Simplify right side
139,170.05x = 14,961,978,741.78 - Step 5: Solve for x
x = 14,961,978,741.78/139,170.05 - Step 6: Final answer
x = 107,508.61
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1.5x scale
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.