Finding the Fourth Proportional to 157,622.13, 217,516.26 and 86,000.70
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Solution
The fourth proportional to 157,622.13, 217,516.26 and 86,000.70 is: 118,679.72
Step by Step Solution
- Step 1: Write the proportion equation
157,622.13 : 217,516.26 = 86,000.70 : x - Step 2: Convert to fraction form
157,622.13/217,516.26 = 86,000.70/x - Step 3: Cross multiply
157,622.13x = 217,516.26 × 86,000.70 - Step 4: Simplify right side
157,622.13x = 18,706,550,621.38 - Step 5: Solve for x
x = 18,706,550,621.38/157,622.13 - Step 6: Final answer
x = 118,679.72
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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.