Finding the Fourth Proportional to 190,032.21, 262,242.14 and 103,990.28
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Solution
The fourth proportional to 190,032.21, 262,242.14 and 103,990.28 is: 143,505.31
Step by Step Solution
- Step 1: Write the proportion equation
190,032.21 : 262,242.14 = 103,990.28 : x - Step 2: Convert to fraction form
190,032.21/262,242.14 = 103,990.28/x - Step 3: Cross multiply
190,032.21x = 262,242.14 × 103,990.28 - Step 4: Simplify right side
190,032.21x = 27,270,631,735.24 - Step 5: Solve for x
x = 27,270,631,735.24/190,032.21 - Step 6: Final answer
x = 143,505.31
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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.