Finding the Fourth Proportional to 118,245.70, 177,368.55 and 112,413.70
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Solution
The fourth proportional to 118,245.70, 177,368.55 and 112,413.70 is: 168,620.55
Step by Step Solution
- Step 1: Write the proportion equation
118,245.70 : 177,368.55 = 112,413.70 : x - Step 2: Convert to fraction form
118,245.70/177,368.55 = 112,413.70/x - Step 3: Cross multiply
118,245.70x = 177,368.55 × 112,413.70 - Step 4: Simplify right side
118,245.70x = 19,938,654,969.14 - Step 5: Solve for x
x = 19,938,654,969.14/118,245.70 - Step 6: Final answer
x = 168,620.55
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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.