Finding the Fourth Proportional to 128,338,617.42, 177,106,086.63 and 69,602,578.74
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Solution
The fourth proportional to 128,338,617.42, 177,106,086.63 and 69,602,578.74 is: 96,050,904.92
Step by Step Solution
- Step 1: Write the proportion equation
128,338,617.42 : 177,106,086.63 = 69,602,578.74 : x - Step 2: Convert to fraction form
128,338,617.42/177,106,086.63 = 69,602,578.74/x - Step 3: Cross multiply
128,338,617.42x = 177,106,086.63 × 69,602,578.74 - Step 4: Simplify right side
128,338,617.42x = 12,327,040,339,997,834 - Step 5: Solve for x
x = 12,327,040,339,997,834/128,338,617.42 - Step 6: Final answer
x = 96,050,904.92
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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.