Finding the Fourth Proportional to 124,128,615.61, 171,295,396.79 and 68,379,250.95
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Solution
The fourth proportional to 124,128,615.61, 171,295,396.79 and 68,379,250.95 is: 94,362,213.46
Step by Step Solution
- Step 1: Write the proportion equation
124,128,615.61 : 171,295,396.79 = 68,379,250.95 : x - Step 2: Convert to fraction form
124,128,615.61/171,295,396.79 = 68,379,250.95/x - Step 3: Cross multiply
124,128,615.61x = 171,295,396.79 × 68,379,250.95 - Step 4: Simplify right side
124,128,615.61x = 11,713,050,923,341,338 - Step 5: Solve for x
x = 11,713,050,923,341,338/124,128,615.61 - Step 6: Final answer
x = 94,362,213.46
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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.