Finding the Fourth Proportional to 121,408.24, 167,283.48 and 81,595.12
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Solution
The fourth proportional to 121,408.24, 167,283.48 and 81,595.12 is: 112,426.60
Step by Step Solution
- Step 1: Write the proportion equation
121,408.24 : 167,283.48 = 81,595.12 : x - Step 2: Convert to fraction form
121,408.24/167,283.48 = 81,595.12/x - Step 3: Cross multiply
121,408.24x = 167,283.48 × 81,595.12 - Step 4: Simplify right side
121,408.24x = 13,649,515,624.62 - Step 5: Solve for x
x = 13,649,515,624.62/121,408.24 - Step 6: Final answer
x = 112,426.60
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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.