Finding the Fourth Proportional to 99,511.80, 149,267.70 and 25,639.80
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Solution
The fourth proportional to 99,511.80, 149,267.70 and 25,639.80 is: 38,459.70
Step by Step Solution
- Step 1: Write the proportion equation
99,511.80 : 149,267.70 = 25,639.80 : x - Step 2: Convert to fraction form
99,511.80/149,267.70 = 25,639.80/x - Step 3: Cross multiply
99,511.80x = 149,267.70 × 25,639.80 - Step 4: Simplify right side
99,511.80x = 3,827,193,974.46 - Step 5: Solve for x
x = 3,827,193,974.46/99,511.80 - Step 6: Final answer
x = 38,459.70
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1.5x scale
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.