Finding the Fourth Proportional to 122,297.70, 168,778.89 and 68,586.18
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Solution
The fourth proportional to 122,297.70, 168,778.89 and 68,586.18 is: 94,653.45
Step by Step Solution
- Step 1: Write the proportion equation
122,297.70 : 168,778.89 = 68,586.18 : x - Step 2: Convert to fraction form
122,297.70/168,778.89 = 68,586.18/x - Step 3: Cross multiply
122,297.70x = 168,778.89 × 68,586.18 - Step 4: Simplify right side
122,297.70x = 11,575,899,329.74 - Step 5: Solve for x
x = 11,575,899,329.74/122,297.70 - Step 6: Final answer
x = 94,653.45
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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.