Finding the Fourth Proportional to 99,201.99, 136,899.14 and 53,880.73
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Solution
The fourth proportional to 99,201.99, 136,899.14 and 53,880.73 is: 74,355.62
Step by Step Solution
- Step 1: Write the proportion equation
99,201.99 : 136,899.14 = 53,880.73 : x - Step 2: Convert to fraction form
99,201.99/136,899.14 = 53,880.73/x - Step 3: Cross multiply
99,201.99x = 136,899.14 × 53,880.73 - Step 4: Simplify right side
99,201.99x = 7,376,225,599.57 - Step 5: Solve for x
x = 7,376,225,599.57/99,201.99 - Step 6: Final answer
x = 74,355.62
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1.5x scale
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.