Finding the Fourth Proportional to 158,343.37, 218,505.68 and 86,709.55
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Solution
The fourth proportional to 158,343.37, 218,505.68 and 86,709.55 is: 119,654.70
Step by Step Solution
- Step 1: Write the proportion equation
158,343.37 : 218,505.68 = 86,709.55 : x - Step 2: Convert to fraction form
158,343.37/218,505.68 = 86,709.55/x - Step 3: Cross multiply
158,343.37x = 218,505.68 × 86,709.55 - Step 4: Simplify right side
158,343.37x = 18,946,529,185.24 - Step 5: Solve for x
x = 18,946,529,185.24/158,343.37 - Step 6: Final answer
x = 119,654.70
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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.