Finding the Fourth Proportional to 99,905.08, 149,728.45 and 74,747.75
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Solution
The fourth proportional to 99,905.08, 149,728.45 and 74,747.75 is: 112,024.97
Step by Step Solution
- Step 1: Write the proportion equation
99,905.08 : 149,728.45 = 74,747.75 : x - Step 2: Convert to fraction form
99,905.08/149,728.45 = 74,747.75/x - Step 3: Cross multiply
99,905.08x = 149,728.45 × 74,747.75 - Step 4: Simplify right side
99,905.08x = 11,191,863,953.13 - Step 5: Solve for x
x = 11,191,863,953.13/99,905.08 - Step 6: Final answer
x = 112,024.97
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.