Finding the Fourth Proportional to 98,189.12, 135,496.16 and 55,742.08
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Solution
The fourth proportional to 98,189.12, 135,496.16 and 55,742.08 is: 76,921.33
Step by Step Solution
- Step 1: Write the proportion equation
98,189.12 : 135,496.16 = 55,742.08 : x - Step 2: Convert to fraction form
98,189.12/135,496.16 = 55,742.08/x - Step 3: Cross multiply
98,189.12x = 135,496.16 × 55,742.08 - Step 4: Simplify right side
98,189.12x = 7,552,837,790.41 - Step 5: Solve for x
x = 7,552,837,790.41/98,189.12 - Step 6: Final answer
x = 76,921.33
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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.