Finding the Fourth Proportional to 157,635.99, 217,542.91 and 86,019.94
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Solution
The fourth proportional to 157,635.99, 217,542.91 and 86,019.94 is: 118,710.38
Step by Step Solution
- Step 1: Write the proportion equation
157,635.99 : 217,542.91 = 86,019.94 : x - Step 2: Convert to fraction form
157,635.99/217,542.91 = 86,019.94/x - Step 3: Cross multiply
157,635.99x = 217,542.91 × 86,019.94 - Step 4: Simplify right side
157,635.99x = 18,713,028,065.63 - Step 5: Solve for x
x = 18,713,028,065.63/157,635.99 - Step 6: Final answer
x = 118,710.38
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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.