Finding the Fourth Proportional to 141,530.05, 212,120.11 and 71,371.09
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Solution
The fourth proportional to 141,530.05, 212,120.11 and 71,371.09 is: 106,968.40
Step by Step Solution
- Step 1: Write the proportion equation
141,530.05 : 212,120.11 = 71,371.09 : x - Step 2: Convert to fraction form
141,530.05/212,120.11 = 71,371.09/x - Step 3: Cross multiply
141,530.05x = 212,120.11 × 71,371.09 - Step 4: Simplify right side
141,530.05x = 15,139,243,461.62 - Step 5: Solve for x
x = 15,139,243,461.62/141,530.05 - Step 6: Final answer
x = 106,968.40
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1.5x scale
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.