Finding the Fourth Proportional to 121,279.10, 167,319.15 and 73,515.02
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Solution
The fourth proportional to 121,279.10, 167,319.15 and 73,515.02 is: 101,422.84
Step by Step Solution
- Step 1: Write the proportion equation
121,279.10 : 167,319.15 = 73,515.02 : x - Step 2: Convert to fraction form
121,279.10/167,319.15 = 73,515.02/x - Step 3: Cross multiply
121,279.10x = 167,319.15 × 73,515.02 - Step 4: Simplify right side
121,279.10x = 12,300,470,658.63 - Step 5: Solve for x
x = 12,300,470,658.63/121,279.10 - Step 6: Final answer
x = 101,422.84
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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.