Finding the Fourth Proportional to 109,919.80, 164,879.70 and 97,235.20
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Solution
The fourth proportional to 109,919.80, 164,879.70 and 97,235.20 is: 145,852.80
Step by Step Solution
- Step 1: Write the proportion equation
109,919.80 : 164,879.70 = 97,235.20 : x - Step 2: Convert to fraction form
109,919.80/164,879.70 = 97,235.20/x - Step 3: Cross multiply
109,919.80x = 164,879.70 × 97,235.20 - Step 4: Simplify right side
109,919.80x = 16,032,110,605.44 - Step 5: Solve for x
x = 16,032,110,605.44/109,919.80 - Step 6: Final answer
x = 145,852.80
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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.