Finding the Fourth Proportional to 121,115.63, 167,140.68 and 67,402.91
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Solution
The fourth proportional to 121,115.63, 167,140.68 and 67,402.91 is: 93,016.63
Step by Step Solution
- Step 1: Write the proportion equation
121,115.63 : 167,140.68 = 67,402.91 : x - Step 2: Convert to fraction form
121,115.63/167,140.68 = 67,402.91/x - Step 3: Cross multiply
121,115.63x = 167,140.68 × 67,402.91 - Step 4: Simplify right side
121,115.63x = 11,265,768,211.38 - Step 5: Solve for x
x = 11,265,768,211.38/121,115.63 - Step 6: Final answer
x = 93,016.63
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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.