Finding the Fourth Proportional to 128,267.20, 192,400.80 and 34,772.80
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Solution
The fourth proportional to 128,267.20, 192,400.80 and 34,772.80 is: 52,159.20
Step by Step Solution
- Step 1: Write the proportion equation
128,267.20 : 192,400.80 = 34,772.80 : x - Step 2: Convert to fraction form
128,267.20/192,400.80 = 34,772.80/x - Step 3: Cross multiply
128,267.20x = 192,400.80 × 34,772.80 - Step 4: Simplify right side
128,267.20x = 6,690,314,538.24 - Step 5: Solve for x
x = 6,690,314,538.24/128,267.20 - Step 6: Final answer
x = 52,159.20
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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.