Finding the Fourth Proportional to 136,487.58, 188,353.61 and 79,160.88
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Solution
The fourth proportional to 136,487.58, 188,353.61 and 79,160.88 is: 109,242.45
Step by Step Solution
- Step 1: Write the proportion equation
136,487.58 : 188,353.61 = 79,160.88 : x - Step 2: Convert to fraction form
136,487.58/188,353.61 = 79,160.88/x - Step 3: Cross multiply
136,487.58x = 188,353.61 × 79,160.88 - Step 4: Simplify right side
136,487.58x = 14,910,237,518.78 - Step 5: Solve for x
x = 14,910,237,518.78/136,487.58 - Step 6: Final answer
x = 109,242.45
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1.5x scale
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.