Finding the Fourth Proportional to 128,865,986.88, 193,317,138.50 and 41,398,174.54
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Solution
The fourth proportional to 128,865,986.88, 193,317,138.50 and 41,398,174.54 is: 62,103,095.12
Step by Step Solution
- Step 1: Write the proportion equation
128,865,986.88 : 193,317,138.50 = 41,398,174.54 : x - Step 2: Convert to fraction form
128,865,986.88/193,317,138.50 = 41,398,174.54/x - Step 3: Cross multiply
128,865,986.88x = 193,317,138.50 × 41,398,174.54 - Step 4: Simplify right side
128,865,986.88x = 8,002,976,641,231,009 - Step 5: Solve for x
x = 8,002,976,641,231,009/128,865,986.88 - Step 6: Final answer
x = 62,103,095.12
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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.