Finding the Fourth Proportional to 157,737.91, 217,668.18 and 86,117.78
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Solution
The fourth proportional to 157,737.91, 217,668.18 and 86,117.78 is: 118,837.00
Step by Step Solution
- Step 1: Write the proportion equation
157,737.91 : 217,668.18 = 86,117.78 : x - Step 2: Convert to fraction form
157,737.91/217,668.18 = 86,117.78/x - Step 3: Cross multiply
157,737.91x = 217,668.18 × 86,117.78 - Step 4: Simplify right side
157,737.91x = 18,745,100,438.24 - Step 5: Solve for x
x = 18,745,100,438.24/157,737.91 - Step 6: Final answer
x = 118,837.00
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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.