Finding the Fourth Proportional to 132,811.80, 199,217.70 and 115,315.80
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Solution
The fourth proportional to 132,811.80, 199,217.70 and 115,315.80 is: 172,973.70
Step by Step Solution
- Step 1: Write the proportion equation
132,811.80 : 199,217.70 = 115,315.80 : x - Step 2: Convert to fraction form
132,811.80/199,217.70 = 115,315.80/x - Step 3: Cross multiply
132,811.80x = 199,217.70 × 115,315.80 - Step 4: Simplify right side
132,811.80x = 22,972,948,449.66 - Step 5: Solve for x
x = 22,972,948,449.66/132,811.80 - Step 6: Final answer
x = 172,973.70
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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.