Finding the Fourth Proportional to 128,565.20, 192,847.80 and 35,070.80
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Solution
The fourth proportional to 128,565.20, 192,847.80 and 35,070.80 is: 52,606.20
Step by Step Solution
- Step 1: Write the proportion equation
128,565.20 : 192,847.80 = 35,070.80 : x - Step 2: Convert to fraction form
128,565.20/192,847.80 = 35,070.80/x - Step 3: Cross multiply
128,565.20x = 192,847.80 × 35,070.80 - Step 4: Simplify right side
128,565.20x = 6,763,326,624.24 - Step 5: Solve for x
x = 6,763,326,624.24/128,565.20 - Step 6: Final answer
x = 52,606.20
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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.