Finding the Fourth Proportional to 121,128.08, 167,155.09 and 67,413.09
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Solution
The fourth proportional to 121,128.08, 167,155.09 and 67,413.09 is: 93,029.14
Step by Step Solution
- Step 1: Write the proportion equation
121,128.08 : 167,155.09 = 67,413.09 : x - Step 2: Convert to fraction form
121,128.08/167,155.09 = 67,413.09/x - Step 3: Cross multiply
121,128.08x = 167,155.09 × 67,413.09 - Step 4: Simplify right side
121,128.08x = 11,268,441,397.41 - Step 5: Solve for x
x = 11,268,441,397.41/121,128.08 - Step 6: Final answer
x = 93,029.14
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.