Finding the Fourth Proportional to 157,936.74, 217,953.09 and 86,317.62
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Solution
The fourth proportional to 157,936.74, 217,953.09 and 86,317.62 is: 119,118.53
Step by Step Solution
- Step 1: Write the proportion equation
157,936.74 : 217,953.09 = 86,317.62 : x - Step 2: Convert to fraction form
157,936.74/217,953.09 = 86,317.62/x - Step 3: Cross multiply
157,936.74x = 217,953.09 × 86,317.62 - Step 4: Simplify right side
157,936.74x = 18,813,192,000.45 - Step 5: Solve for x
x = 18,813,192,000.45/157,936.74 - Step 6: Final answer
x = 119,118.53
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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.