Finding the Fourth Proportional to 122,413.20, 183,619.80 and 69,925.20
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Solution
The fourth proportional to 122,413.20, 183,619.80 and 69,925.20 is: 104,887.80
Step by Step Solution
- Step 1: Write the proportion equation
122,413.20 : 183,619.80 = 69,925.20 : x - Step 2: Convert to fraction form
122,413.20/183,619.80 = 69,925.20/x - Step 3: Cross multiply
122,413.20x = 183,619.80 × 69,925.20 - Step 4: Simplify right side
122,413.20x = 12,839,651,238.96 - Step 5: Solve for x
x = 12,839,651,238.96/122,413.20 - Step 6: Final answer
x = 104,887.80
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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.