Finding the Fourth Proportional to 121,481.36, 167,648.44 and 70,490.24
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Solution
The fourth proportional to 121,481.36, 167,648.44 and 70,490.24 is: 97,278.95
Step by Step Solution
- Step 1: Write the proportion equation
121,481.36 : 167,648.44 = 70,490.24 : x - Step 2: Convert to fraction form
121,481.36/167,648.44 = 70,490.24/x - Step 3: Cross multiply
121,481.36x = 167,648.44 × 70,490.24 - Step 4: Simplify right side
121,481.36x = 11,817,578,771.23 - Step 5: Solve for x
x = 11,817,578,771.23/121,481.36 - Step 6: Final answer
x = 97,278.95
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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.