Finding the Fourth Proportional to 121,329.76, 167,435.74 and 70,372.68
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Solution
The fourth proportional to 121,329.76, 167,435.74 and 70,372.68 is: 97,114.69
Step by Step Solution
- Step 1: Write the proportion equation
121,329.76 : 167,435.74 = 70,372.68 : x - Step 2: Convert to fraction form
121,329.76/167,435.74 = 70,372.68/x - Step 3: Cross multiply
121,329.76x = 167,435.74 × 70,372.68 - Step 4: Simplify right side
121,329.76x = 11,782,901,751.58 - Step 5: Solve for x
x = 11,782,901,751.58/121,329.76 - Step 6: Final answer
x = 97,114.69
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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.