Finding the Fourth Proportional to 115,989.80, 173,984.70 and 53,781.80
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Solution
The fourth proportional to 115,989.80, 173,984.70 and 53,781.80 is: 80,672.70
Step by Step Solution
- Step 1: Write the proportion equation
115,989.80 : 173,984.70 = 53,781.80 : x - Step 2: Convert to fraction form
115,989.80/173,984.70 = 53,781.80/x - Step 3: Cross multiply
115,989.80x = 173,984.70 × 53,781.80 - Step 4: Simplify right side
115,989.80x = 9,357,210,338.46 - Step 5: Solve for x
x = 9,357,210,338.46/115,989.80 - Step 6: Final answer
x = 80,672.70
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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.