Finding the Fourth Proportional to 120,863.80, 181,295.70 and 118,271.80
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Solution
The fourth proportional to 120,863.80, 181,295.70 and 118,271.80 is: 177,407.70
Step by Step Solution
- Step 1: Write the proportion equation
120,863.80 : 181,295.70 = 118,271.80 : x - Step 2: Convert to fraction form
120,863.80/181,295.70 = 118,271.80/x - Step 3: Cross multiply
120,863.80x = 181,295.70 × 118,271.80 - Step 4: Simplify right side
120,863.80x = 21,442,168,771.26 - Step 5: Solve for x
x = 21,442,168,771.26/120,863.80 - Step 6: Final answer
x = 177,407.70
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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.