Finding the Fourth Proportional to 139,402.08, 192,376.62 and 75,740.94
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Solution
The fourth proportional to 139,402.08, 192,376.62 and 75,740.94 is: 104,523.45
Step by Step Solution
- Step 1: Write the proportion equation
139,402.08 : 192,376.62 = 75,740.94 : x - Step 2: Convert to fraction form
139,402.08/192,376.62 = 75,740.94/x - Step 3: Cross multiply
139,402.08x = 192,376.62 × 75,740.94 - Step 4: Simplify right side
139,402.08x = 14,570,786,032.82 - Step 5: Solve for x
x = 14,570,786,032.82/139,402.08 - Step 6: Final answer
x = 104,523.45
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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.