Finding the Fourth Proportional to 98,858.18, 136,423.60 and 53,535.12
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Solution
The fourth proportional to 98,858.18, 136,423.60 and 53,535.12 is: 73,878.09
Step by Step Solution
- Step 1: Write the proportion equation
98,858.18 : 136,423.60 = 53,535.12 : x - Step 2: Convert to fraction form
98,858.18/136,423.60 = 53,535.12/x - Step 3: Cross multiply
98,858.18x = 136,423.60 × 53,535.12 - Step 4: Simplify right side
98,858.18x = 7,303,453,796.83 - Step 5: Solve for x
x = 7,303,453,796.83/98,858.18 - Step 6: Final answer
x = 73,878.09
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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.