Finding the Fourth Proportional to 120,283.49, 180,425.99 and 31,536.20
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Solution
The fourth proportional to 120,283.49, 180,425.99 and 31,536.20 is: 47,304.50
Step by Step Solution
- Step 1: Write the proportion equation
120,283.49 : 180,425.99 = 31,536.20 : x - Step 2: Convert to fraction form
120,283.49/180,425.99 = 31,536.20/x - Step 3: Cross multiply
120,283.49x = 180,425.99 × 31,536.20 - Step 4: Simplify right side
120,283.49x = 5,689,950,635.74 - Step 5: Solve for x
x = 5,689,950,635.74/120,283.49 - Step 6: Final answer
x = 47,304.50
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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.