Finding the Fourth Proportional to 142,197.99, 212,669.55 and 126,513.09
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Solution
The fourth proportional to 142,197.99, 212,669.55 and 126,513.09 is: 189,211.41
Step by Step Solution
- Step 1: Write the proportion equation
142,197.99 : 212,669.55 = 126,513.09 : x - Step 2: Convert to fraction form
142,197.99/212,669.55 = 126,513.09/x - Step 3: Cross multiply
142,197.99x = 212,669.55 × 126,513.09 - Step 4: Simplify right side
142,197.99x = 26,905,481,919.41 - Step 5: Solve for x
x = 26,905,481,919.41/142,197.99 - Step 6: Final answer
x = 189,211.41
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.