Finding the Fourth Proportional to 210,766.19, 316,128.76 and 115,965.20
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Solution
The fourth proportional to 210,766.19, 316,128.76 and 115,965.20 is: 173,936.51
Step by Step Solution
- Step 1: Write the proportion equation
210,766.19 : 316,128.76 = 115,965.20 : x - Step 2: Convert to fraction form
210,766.19/316,128.76 = 115,965.20/x - Step 3: Cross multiply
210,766.19x = 316,128.76 × 115,965.20 - Step 4: Simplify right side
210,766.19x = 36,659,935,379.56 - Step 5: Solve for x
x = 36,659,935,379.56/210,766.19 - Step 6: Final answer
x = 173,936.51
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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.