Finding the Fourth Proportional to 157,672.15, 217,588.17 and 86,053.75
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Solution
The fourth proportional to 157,672.15, 217,588.17 and 86,053.75 is: 118,754.50
Step by Step Solution
- Step 1: Write the proportion equation
157,672.15 : 217,588.17 = 86,053.75 : x - Step 2: Convert to fraction form
157,672.15/217,588.17 = 86,053.75/x - Step 3: Cross multiply
157,672.15x = 217,588.17 × 86,053.75 - Step 4: Simplify right side
157,672.15x = 18,724,277,984.14 - Step 5: Solve for x
x = 18,724,277,984.14/157,672.15 - Step 6: Final answer
x = 118,754.50
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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.