Finding the Fourth Proportional to 139,697.70, 192,819.88 and 86,027.68
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Solution
The fourth proportional to 139,697.70, 192,819.88 and 86,027.68 is: 118,741.02
Step by Step Solution
- Step 1: Write the proportion equation
139,697.70 : 192,819.88 = 86,027.68 : x - Step 2: Convert to fraction form
139,697.70/192,819.88 = 86,027.68/x - Step 3: Cross multiply
139,697.70x = 192,819.88 × 86,027.68 - Step 4: Simplify right side
139,697.70x = 16,587,846,934.28 - Step 5: Solve for x
x = 16,587,846,934.28/139,697.70 - Step 6: Final answer
x = 118,741.02
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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.