Finding the Fourth Proportional to 189,519.09, 261,536.84 and 103,478.19
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Solution
The fourth proportional to 189,519.09, 261,536.84 and 103,478.19 is: 142,800.17
Step by Step Solution
- Step 1: Write the proportion equation
189,519.09 : 261,536.84 = 103,478.19 : x - Step 2: Convert to fraction form
189,519.09/261,536.84 = 103,478.19/x - Step 3: Cross multiply
189,519.09x = 261,536.84 × 103,478.19 - Step 4: Simplify right side
189,519.09x = 27,063,358,821.52 - Step 5: Solve for x
x = 27,063,358,821.52/189,519.09 - Step 6: Final answer
x = 142,800.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.