Finding the Fourth Proportional to 98,157.12, 135,295.08 and 69,439.68
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Solution
The fourth proportional to 98,157.12, 135,295.08 and 69,439.68 is: 95,712.33
Step by Step Solution
- Step 1: Write the proportion equation
98,157.12 : 135,295.08 = 69,439.68 : x - Step 2: Convert to fraction form
98,157.12/135,295.08 = 69,439.68/x - Step 3: Cross multiply
98,157.12x = 135,295.08 × 69,439.68 - Step 4: Simplify right side
98,157.12x = 9,394,847,060.77 - Step 5: Solve for x
x = 9,394,847,060.77/98,157.12 - Step 6: Final answer
x = 95,712.33
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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.