Finding the Fourth Proportional to 124,430.20, 186,645.30 and 113,543.80
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Solution
The fourth proportional to 124,430.20, 186,645.30 and 113,543.80 is: 170,315.70
Step by Step Solution
- Step 1: Write the proportion equation
124,430.20 : 186,645.30 = 113,543.80 : x - Step 2: Convert to fraction form
124,430.20/186,645.30 = 113,543.80/x - Step 3: Cross multiply
124,430.20x = 186,645.30 × 113,543.80 - Step 4: Simplify right side
124,430.20x = 21,192,416,614.14 - Step 5: Solve for x
x = 21,192,416,614.14/124,430.20 - Step 6: Final answer
x = 170,315.70
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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.