Finding the Fourth Proportional to 126,988.68, 190,514.76 and 89,621.70
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Solution
The fourth proportional to 126,988.68, 190,514.76 and 89,621.70 is: 134,454.95
Step by Step Solution
- Step 1: Write the proportion equation
126,988.68 : 190,514.76 = 89,621.70 : x - Step 2: Convert to fraction form
126,988.68/190,514.76 = 89,621.70/x - Step 3: Cross multiply
126,988.68x = 190,514.76 × 89,621.70 - Step 4: Simplify right side
126,988.68x = 17,074,256,666.29 - Step 5: Solve for x
x = 17,074,256,666.29/126,988.68 - Step 6: Final answer
x = 134,454.95
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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.