Finding the Fourth Proportional to 138,997,741.08, 191,816,907.57 and 77,117,932.02
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Solution
The fourth proportional to 138,997,741.08, 191,816,907.57 and 77,117,932.02 is: 106,422,759.99
Step by Step Solution
- Step 1: Write the proportion equation
138,997,741.08 : 191,816,907.57 = 77,117,932.02 : x - Step 2: Convert to fraction form
138,997,741.08/191,816,907.57 = 77,117,932.02/x - Step 3: Cross multiply
138,997,741.08x = 191,816,907.57 × 77,117,932.02 - Step 4: Simplify right side
138,997,741.08x = 14,792,523,238,269,882 - Step 5: Solve for x
x = 14,792,523,238,269,882/138,997,741.08 - Step 6: Final answer
x = 106,422,759.99
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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.