Finding the Fourth Proportional to 121,338.78, 167,398.97 and 73,574.70
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Solution
The fourth proportional to 121,338.78, 167,398.97 and 73,574.70 is: 101,503.65
Step by Step Solution
- Step 1: Write the proportion equation
121,338.78 : 167,398.97 = 73,574.70 : x - Step 2: Convert to fraction form
121,338.78/167,398.97 = 73,574.70/x - Step 3: Cross multiply
121,338.78x = 167,398.97 × 73,574.70 - Step 4: Simplify right side
121,338.78x = 12,316,328,630.19 - Step 5: Solve for x
x = 12,316,328,630.19/121,338.78 - Step 6: Final answer
x = 101,503.65
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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.