Finding the Fourth Proportional to 103,601,413.12, 142,966,203.24 and 57,190,670.68
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Solution
The fourth proportional to 103,601,413.12, 142,966,203.24 and 57,190,670.68 is: 78,921,057.17
Step by Step Solution
- Step 1: Write the proportion equation
103,601,413.12 : 142,966,203.24 = 57,190,670.68 : x - Step 2: Convert to fraction form
103,601,413.12/142,966,203.24 = 57,190,670.68/x - Step 3: Cross multiply
103,601,413.12x = 142,966,203.24 × 57,190,670.68 - Step 4: Simplify right side
103,601,413.12x = 8,176,333,047,868,790 - Step 5: Solve for x
x = 8,176,333,047,868,790/103,601,413.12 - Step 6: Final answer
x = 78,921,057.17
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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.