Finding the Fourth Proportional to 159,485.21, 220,090.13 and 87,865.07
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Solution
The fourth proportional to 159,485.21, 220,090.13 and 87,865.07 is: 121,254.09
Step by Step Solution
- Step 1: Write the proportion equation
159,485.21 : 220,090.13 = 87,865.07 : x - Step 2: Convert to fraction form
159,485.21/220,090.13 = 87,865.07/x - Step 3: Cross multiply
159,485.21x = 220,090.13 × 87,865.07 - Step 4: Simplify right side
159,485.21x = 19,338,233,138.98 - Step 5: Solve for x
x = 19,338,233,138.98/159,485.21 - Step 6: Final answer
x = 121,254.09
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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.