Finding the Fourth Proportional to 97,231.60, 145,879.80 and 86,779.60
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Solution
The fourth proportional to 97,231.60, 145,879.80 and 86,779.60 is: 130,198.32
Step by Step Solution
- Step 1: Write the proportion equation
97,231.60 : 145,879.80 = 86,779.60 : x - Step 2: Convert to fraction form
97,231.60/145,879.80 = 86,779.60/x - Step 3: Cross multiply
97,231.60x = 145,879.80 × 86,779.60 - Step 4: Simplify right side
97,231.60x = 12,659,390,692.08 - Step 5: Solve for x
x = 12,659,390,692.08/97,231.60 - Step 6: Final answer
x = 130,198.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.