Finding the Fourth Proportional to 128,664,755.20, 192,997,132.80 and 32,926,643.20
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Solution
The fourth proportional to 128,664,755.20, 192,997,132.80 and 32,926,643.20 is: 49,389,964.80
Step by Step Solution
- Step 1: Write the proportion equation
128,664,755.20 : 192,997,132.80 = 32,926,643.20 : x - Step 2: Convert to fraction form
128,664,755.20/192,997,132.80 = 32,926,643.20/x - Step 3: Cross multiply
128,664,755.20x = 192,997,132.80 × 32,926,643.20 - Step 4: Simplify right side
128,664,755.20x = 6,354,747,730,328,617 - Step 5: Solve for x
x = 6,354,747,730,328,617/128,664,755.20 - Step 6: Final answer
x = 49,389,964.80
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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.