Finding the Fourth Proportional to 117,815.80, 176,723.70 and 71,159.80
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Solution
The fourth proportional to 117,815.80, 176,723.70 and 71,159.80 is: 106,739.70
Step by Step Solution
- Step 1: Write the proportion equation
117,815.80 : 176,723.70 = 71,159.80 : x - Step 2: Convert to fraction form
117,815.80/176,723.70 = 71,159.80/x - Step 3: Cross multiply
117,815.80x = 176,723.70 × 71,159.80 - Step 4: Simplify right side
117,815.80x = 12,575,623,147.26 - Step 5: Solve for x
x = 12,575,623,147.26/117,815.80 - Step 6: Final answer
x = 106,739.70
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1.5x scale
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.