Finding the Fourth Proportional to 147,136.21, 203,054.63 and 86,709.40
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Solution
The fourth proportional to 147,136.21, 203,054.63 and 86,709.40 is: 119,662.90
Step by Step Solution
- Step 1: Write the proportion equation
147,136.21 : 203,054.63 = 86,709.40 : x - Step 2: Convert to fraction form
147,136.21/203,054.63 = 86,709.40/x - Step 3: Cross multiply
147,136.21x = 203,054.63 × 86,709.40 - Step 4: Simplify right side
147,136.21x = 17,606,745,134.52 - Step 5: Solve for x
x = 17,606,745,134.52/147,136.21 - Step 6: Final answer
x = 119,662.90
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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.