Finding the Fourth Proportional to 106,987.10, 147,631.84 and 63,958.03
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Solution
The fourth proportional to 106,987.10, 147,631.84 and 63,958.03 is: 88,255.89
Step by Step Solution
- Step 1: Write the proportion equation
106,987.10 : 147,631.84 = 63,958.03 : x - Step 2: Convert to fraction form
106,987.10/147,631.84 = 63,958.03/x - Step 3: Cross multiply
106,987.10x = 147,631.84 × 63,958.03 - Step 4: Simplify right side
106,987.10x = 9,442,241,122.70 - Step 5: Solve for x
x = 9,442,241,122.70/106,987.10 - Step 6: Final answer
x = 88,255.89
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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.