Finding the Fourth Proportional to 112,487.58, 168,424.99 and 79,157.70
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Solution
The fourth proportional to 112,487.58, 168,424.99 and 79,157.70 is: 118,520.95
Step by Step Solution
- Step 1: Write the proportion equation
112,487.58 : 168,424.99 = 79,157.70 : x - Step 2: Convert to fraction form
112,487.58/168,424.99 = 79,157.70/x - Step 3: Cross multiply
112,487.58x = 168,424.99 × 79,157.70 - Step 4: Simplify right side
112,487.58x = 13,332,134,633.03 - Step 5: Solve for x
x = 13,332,134,633.03/112,487.58 - Step 6: Final answer
x = 118,520.95
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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.