Finding the Fourth Proportional to 139,909.85, 192,845.16 and 99,021.09
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Solution
The fourth proportional to 139,909.85, 192,845.16 and 99,021.09 is: 136,486.02
Step by Step Solution
- Step 1: Write the proportion equation
139,909.85 : 192,845.16 = 99,021.09 : x - Step 2: Convert to fraction form
139,909.85/192,845.16 = 99,021.09/x - Step 3: Cross multiply
139,909.85x = 192,845.16 × 99,021.09 - Step 4: Simplify right side
139,909.85x = 19,095,737,944.42 - Step 5: Solve for x
x = 19,095,737,944.42/139,909.85 - Step 6: Final answer
x = 136,486.02
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.