Finding the Fourth Proportional to 139,879.05, 193,027.67 and 76,217.32
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Solution
The fourth proportional to 139,879.05, 193,027.67 and 76,217.32 is: 105,176.95
Step by Step Solution
- Step 1: Write the proportion equation
139,879.05 : 193,027.67 = 76,217.32 : x - Step 2: Convert to fraction form
139,879.05/193,027.67 = 76,217.32/x - Step 3: Cross multiply
139,879.05x = 193,027.67 × 76,217.32 - Step 4: Simplify right side
139,879.05x = 14,712,051,312.16 - Step 5: Solve for x
x = 14,712,051,312.16/139,879.05 - Step 6: Final answer
x = 105,176.95
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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.