Finding the Fourth Proportional to 145,969.28, 201,451.56 and 91,530.12
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Solution
The fourth proportional to 145,969.28, 201,451.56 and 91,530.12 is: 126,320.32
Step by Step Solution
- Step 1: Write the proportion equation
145,969.28 : 201,451.56 = 91,530.12 : x - Step 2: Convert to fraction form
145,969.28/201,451.56 = 91,530.12/x - Step 3: Cross multiply
145,969.28x = 201,451.56 × 91,530.12 - Step 4: Simplify right side
145,969.28x = 18,438,885,460.99 - Step 5: Solve for x
x = 18,438,885,460.99/145,969.28 - Step 6: Final answer
x = 126,320.32
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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.