Finding the Fourth Proportional to 128,446.24, 192,598.62 and 39,675.10
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Solution
The fourth proportional to 128,446.24, 192,598.62 and 39,675.10 is: 59,490.80
Step by Step Solution
- Step 1: Write the proportion equation
128,446.24 : 192,598.62 = 39,675.10 : x - Step 2: Convert to fraction form
128,446.24/192,598.62 = 39,675.10/x - Step 3: Cross multiply
128,446.24x = 192,598.62 × 39,675.10 - Step 4: Simplify right side
128,446.24x = 7,641,369,508.36 - Step 5: Solve for x
x = 7,641,369,508.36/128,446.24 - Step 6: Final answer
x = 59,490.80
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1.5x scale
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.