Finding the Fourth Proportional to 99,217.76, 136,922.97 and 53,895.74
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Solution
The fourth proportional to 99,217.76, 136,922.97 and 53,895.74 is: 74,377.45
Step by Step Solution
- Step 1: Write the proportion equation
99,217.76 : 136,922.97 = 53,895.74 : x - Step 2: Convert to fraction form
99,217.76/136,922.97 = 53,895.74/x - Step 3: Cross multiply
99,217.76x = 136,922.97 × 53,895.74 - Step 4: Simplify right side
99,217.76x = 7,379,564,106.53 - Step 5: Solve for x
x = 7,379,564,106.53/99,217.76 - Step 6: Final answer
x = 74,377.45
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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.