Finding the Fourth Proportional to 180,399.78, 248,978.14 and 103,903.99
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Solution
The fourth proportional to 180,399.78, 248,978.14 and 103,903.99 is: 143,402.73
Step by Step Solution
- Step 1: Write the proportion equation
180,399.78 : 248,978.14 = 103,903.99 : x - Step 2: Convert to fraction form
180,399.78/248,978.14 = 103,903.99/x - Step 3: Cross multiply
180,399.78x = 248,978.14 × 103,903.99 - Step 4: Simplify right side
180,399.78x = 25,869,821,286.57 - Step 5: Solve for x
x = 25,869,821,286.57/180,399.78 - Step 6: Final answer
x = 143,402.73
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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.