Finding the Fourth Proportional to 99,437.18, 137,274.09 and 76,725.14
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Solution
The fourth proportional to 99,437.18, 137,274.09 and 76,725.14 is: 105,919.88
Step by Step Solution
- Step 1: Write the proportion equation
99,437.18 : 137,274.09 = 76,725.14 : x - Step 2: Convert to fraction form
99,437.18/137,274.09 = 76,725.14/x - Step 3: Cross multiply
99,437.18x = 137,274.09 × 76,725.14 - Step 4: Simplify right side
99,437.18x = 10,532,373,773.62 - Step 5: Solve for x
x = 10,532,373,773.62/99,437.18 - Step 6: Final answer
x = 105,919.88
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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.