Finding the Fourth Proportional to 121,687,357.07, 167,936,791.75 and 68,745,702.80
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Solution
The fourth proportional to 121,687,357.07, 167,936,791.75 and 68,745,702.80 is: 94,873,724.38
Step by Step Solution
- Step 1: Write the proportion equation
121,687,357.07 : 167,936,791.75 = 68,745,702.80 : x - Step 2: Convert to fraction form
121,687,357.07/167,936,791.75 = 68,745,702.80/x - Step 3: Cross multiply
121,687,357.07x = 167,936,791.75 × 68,745,702.80 - Step 4: Simplify right side
121,687,357.07x = 11,544,932,775,078,968 - Step 5: Solve for x
x = 11,544,932,775,078,968/121,687,357.07 - Step 6: Final answer
x = 94,873,724.38
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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.