Finding the Fourth Proportional to 201,990.33, 278,803.08 and 117,090.99
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Solution
The fourth proportional to 201,990.33, 278,803.08 and 117,090.99 is: 161,618.27
Step by Step Solution
- Step 1: Write the proportion equation
201,990.33 : 278,803.08 = 117,090.99 : x - Step 2: Convert to fraction form
201,990.33/278,803.08 = 117,090.99/x - Step 3: Cross multiply
201,990.33x = 278,803.08 × 117,090.99 - Step 4: Simplify right side
201,990.33x = 32,645,328,652.25 - Step 5: Solve for x
x = 32,645,328,652.25/201,990.33 - Step 6: Final answer
x = 161,618.27
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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.