Finding the Fourth Proportional to 99,909.70, 149,735.36 and 74,752.37
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Solution
The fourth proportional to 99,909.70, 149,735.36 and 74,752.37 is: 112,031.89
Step by Step Solution
- Step 1: Write the proportion equation
99,909.70 : 149,735.36 = 74,752.37 : x - Step 2: Convert to fraction form
99,909.70/149,735.36 = 74,752.37/x - Step 3: Cross multiply
99,909.70x = 149,735.36 × 74,752.37 - Step 4: Simplify right side
99,909.70x = 11,193,072,284.13 - Step 5: Solve for x
x = 11,193,072,284.13/99,909.70 - Step 6: Final answer
x = 112,031.89
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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.