Finding the Fourth Proportional to 157,633.76, 217,531.68 and 86,011.94
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Solution
The fourth proportional to 157,633.76, 217,531.68 and 86,011.94 is: 118,694.89
Step by Step Solution
- Step 1: Write the proportion equation
157,633.76 : 217,531.68 = 86,011.94 : x - Step 2: Convert to fraction form
157,633.76/217,531.68 = 86,011.94/x - Step 3: Cross multiply
157,633.76x = 217,531.68 × 86,011.94 - Step 4: Simplify right side
157,633.76x = 18,710,321,808.26 - Step 5: Solve for x
x = 18,710,321,808.26/157,633.76 - Step 6: Final answer
x = 118,694.89
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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.