Finding the Fourth Proportional to 121,521.98, 167,711.93 and 73,764.38
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Solution
The fourth proportional to 121,521.98, 167,711.93 and 73,764.38 is: 101,801.88
Step by Step Solution
- Step 1: Write the proportion equation
121,521.98 : 167,711.93 = 73,764.38 : x - Step 2: Convert to fraction form
121,521.98/167,711.93 = 73,764.38/x - Step 3: Cross multiply
121,521.98x = 167,711.93 × 73,764.38 - Step 4: Simplify right side
121,521.98x = 12,371,166,535.05 - Step 5: Solve for x
x = 12,371,166,535.05/121,521.98 - Step 6: Final answer
x = 101,801.88
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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.