Finding the Fourth Proportional to 189,320.20, 261,215.25 and 115,713.98
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Solution
The fourth proportional to 189,320.20, 261,215.25 and 115,713.98 is: 159,656.79
Step by Step Solution
- Step 1: Write the proportion equation
189,320.20 : 261,215.25 = 115,713.98 : x - Step 2: Convert to fraction form
189,320.20/261,215.25 = 115,713.98/x - Step 3: Cross multiply
189,320.20x = 261,215.25 × 115,713.98 - Step 4: Simplify right side
189,320.20x = 30,226,256,214.20 - Step 5: Solve for x
x = 30,226,256,214.20/189,320.20 - Step 6: Final answer
x = 159,656.79
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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.