Finding the Fourth Proportional to 149,136.24, 205,812.84 and 85,486.08
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Solution
The fourth proportional to 149,136.24, 205,812.84 and 85,486.08 is: 117,973.56
Step by Step Solution
- Step 1: Write the proportion equation
149,136.24 : 205,812.84 = 85,486.08 : x - Step 2: Convert to fraction form
149,136.24/205,812.84 = 85,486.08/x - Step 3: Cross multiply
149,136.24x = 205,812.84 × 85,486.08 - Step 4: Simplify right side
149,136.24x = 17,594,132,905.27 - Step 5: Solve for x
x = 17,594,132,905.27/149,136.24 - Step 6: Final answer
x = 117,973.56
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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.