Finding the Fourth Proportional to 121,795,331.98, 168,077,378.28 and 66,040,651.12
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Solution
The fourth proportional to 121,795,331.98, 168,077,378.28 and 66,040,651.12 is: 91,136,001.02
Step by Step Solution
- Step 1: Write the proportion equation
121,795,331.98 : 168,077,378.28 = 66,040,651.12 : x - Step 2: Convert to fraction form
121,795,331.98/168,077,378.28 = 66,040,651.12/x - Step 3: Cross multiply
121,795,331.98x = 168,077,378.28 × 66,040,651.12 - Step 4: Simplify right side
121,795,331.98x = 11,099,939,500,153,746 - Step 5: Solve for x
x = 11,099,939,500,153,746/121,795,331.98 - Step 6: Final answer
x = 91,136,001.02
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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.