Finding the Fourth Proportional to 142,770.09, 197,026.83 and 79,111.99
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Solution
The fourth proportional to 142,770.09, 197,026.83 and 79,111.99 is: 109,176.82
Step by Step Solution
- Step 1: Write the proportion equation
142,770.09 : 197,026.83 = 79,111.99 : x - Step 2: Convert to fraction form
142,770.09/197,026.83 = 79,111.99/x - Step 3: Cross multiply
142,770.09x = 197,026.83 × 79,111.99 - Step 4: Simplify right side
142,770.09x = 15,587,184,850.98 - Step 5: Solve for x
x = 15,587,184,850.98/142,770.09 - Step 6: Final answer
x = 109,176.82
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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.